BMW Downpipes

Supersprint Downpipes With Sport Catalytic Converters - G05, G06, G07...

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T#:2824964

Part#: 989741KT

Ships in 4 Business Days

$ 7,228.99 USD

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Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound. Even at a premium price Supersprint is an unbeatable exhaust system because every aspect is done to such a high level. A Supersprint exhaust rewards you with a terrific sound, long lasting construction and excellent fitment. The Supersprint sound is very 'European' which fits the sporting sophistication of BMWs perfectly. Most systems are also modular - sections can be added or removed to custom tailor the exhaust sound to your preference. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud. Most Supersprint systems are built with larger diameter piping to improve exhaust flow which helps the engine do less work and make more horsepower! Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation! NOTE: Supersprint engineers and manufactures complete exhaust systems. This part was designed to be used with the rest of the Supersprint system on this car but may be used on its own. Contact us for more details. This product modifies (but does not remove or defeat) emissions equipment. For this reason this product may not be CARB compliant, and therefore not emissions legal in some states. Consult local laws and regulations in your area. For more information on this product, feel free to contact our sales department.

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Hi-Flow Sports Catted Downpipes - B58

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T#:591396

Part#: SSXBM1039

Ships in 4 Business Days

Sale - Save 10% $ 2,935.99

This product was last offered at the strikethrough price on
07-01-2026

$ 2,641.51 USD

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$ 2,935.99

This product was last offered at the strikethrough price on
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$ 2,641.51 USD

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With in-house production and engineering in the United Kingdom, they have been designing and developing exhaust systems for over 32 years. This experience has helped put Milltek on the map when it comes to performance exhausts, with offerings that range from Audi/Volkswagen to Porsche, BMW, and even Bentley. But, they don't stop there. Milltek has also made its presence felt in the motorsport community. Through partnerships with various race teams throughout the world, Milltek has gathered feedback on ways to improve their systems from enthusiasts at every level. Constructed of type-304 aircraft grade stainless steel, the quality is top-notch. To take it a step further, Milltek offers a lifetime warranty to the original purchaser.

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Turbo Downpipe Kit

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T#:583750

Part#: 525421441KT

Ships on Oct 13, 2026

$ 7,116.00 USD

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Catted downpipes that mate with the factory exhaust system for a massive power increase while staying emissions friendly.

Supersprint Section 1 With High Flow Metallic Catalytic Converter ...

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T#:589158

Part#: 985502KT

Ships in 4 Business Days

$ 6,602.99 USD

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100% handcrafted in Italy. Stainless steel construction. Legendary sound!

Downpipe With Metallic Catalytic Converter (200CPSI)

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T#:585585

Part#: 525741

Ships in 4 Business Days

$ 3,090.00 USD

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$ 3,090.00 USD

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Supersprint Catted Downpipes

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T#:588532

Part#: 98174121KT

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$ 6,674.99 USD

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100% handcrafted in Italy. Stainless steel construction. Legendary sound!

Hi-Flow Sports Catted Downpipes - F22/F87

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T#:591403

Part#: SSXBM1037

Ships in 4 Business Days

Sale - Save 10% $ 2,876.99

This product was last offered at the strikethrough price on
07-01-2026

$ 2,588.54 USD

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$ 2,876.99

This product was last offered at the strikethrough price on
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$ 2,588.54 USD

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With in-house production and engineering in the United Kingdom, they have been designing and developing exhaust systems for over 32 years. This experience has helped put Milltek on the map when it comes to performance exhausts, with offerings that range from Audi/Volkswagen to Porsche, BMW, and even Bentley. But, they don't stop there. Milltek has also made its presence felt in the motorsport community. Through partnerships with various race teams throughout the world, Milltek has gathered feedback on ways to improve their systems from enthusiasts at every level. Constructed of type-304 aircraft grade stainless steel, the quality is top-notch. To take it a step further, Milltek offers a lifetime warranty to the original purchaser.

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Milltek Large Bore Downpipe And Hi-Flow Sports Car - M3/M4/M2 ...

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T#:39059239

Part#: SSXBM1333

Ships in 4 Business Days

Sale - Save 10% $ 3,638.00

This product was last offered at the strikethrough price on
07-01-2026

$ 3,274.20 USD

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$ 3,638.00

This product was last offered at the strikethrough price on
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$ 3,274.20 USD

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Akrapovic Downpipe With Cat - G20/G21/G22/G23 M340i M440i

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T#:2706135

Part#: DP-TY/SS/1

In Stock at Vendor

$ 5,565.99 USD

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This product is crafted from high-quality stainless steel, with the front part of the downpipe cast in Akrapovič’s in-house foundry. A sporty 300 cpsi catalytic converter is integrated into the downpipe, with the heat insulation made of stainless steel and a flexible tube incorporated into the middle section. Power gains with an Evolution Line (Titanium) fitted with the Akrapovič downpipe of 18.7 kW (25.4 hp) at 5,600 rpm and torque increases of 34.7 Nm at 2,400 rpm have been recorded when tested on the Akrapovič dyno against a BMW M440i with the standard stock exhaust. It delivers a pure racing sound, full of emotion and adrenalin-inducing enjoyment, and great feedback at high revs, all without unwanted drone.

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Supersprint Performance Exhaust System - F97 X3 M, F98 X4 M

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T#:588288

Part#: 5260X2

Ships in 3 Business Days

Starting at $ 5,023.99 USD

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Starting at $ 5,023.99 USD

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Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound. Even at a premium price, Supersprint is an unbeatable exhaust system because every aspect is done to such a high level. A Supersprint exhaust rewards you with a terrific sound, long-lasting construction, and excellent fitment. The Supersprint sound is very 'European' which fits the sporting sophistication of BMWs perfectly. Most systems are also modular - sections can be added or removed to custom tailor the exhaust sound to your preference. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud. Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation!

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Large Bore Downpipe And Hi-Flow Sports Cat - UK and EURO ONLY ...

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T#:597447

Part#: SSXM450

Ships in 4 Business Days

Sale - Save 10% $ 1,602.99

This product was last offered at the strikethrough price on
07-01-2026

$ 1,442.57 USD

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$ 1,602.99

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07-01-2026

$ 1,442.57 USD

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E71 X6 50i Supersprint Turbo Left Downpipe with Cat

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T#:184266

Part#: 981741

Ships in 4 Business Days

$ 3,337.99 USD

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$ 3,337.99 USD

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Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound. Even at a premium price Supersprint is an unbeatable exhaust system because every aspect is done to such a high level. A Supersprint exhaust rewards you with a terrific sound, long lasting construction and excellent fitment. The Supersprint sound is very 'European' which fits the sporting sophistication of BMWs perfectly. Most systems are also modular - sections can be added or removed to custom tailor the exhaust sound to your preferance. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud. Most Supersprint systems are built with larger diameter piping to improve exhaust flow which helps the engine do less work and make more horsepower! Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation!

NOTE: Supersprint engineers and manufactures complete exhaust systems. This part was designed to be used with the rest of the Supersprint system on this car but may be used on its own. Contact us for more details.

This product modifies (but does not remove or defeat) emissions equipment. For this reason this product may not be CARB compliant, and therefore not emissions legal in some states. Consult local laws and regulations in your area. For more information on this product, feel free to contact our sales department.

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Eisenmann Black Series Upper Downpipe Set With Ceramic Black Coating ...

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T#:584684

Part#: B5555.2DP1.BKT

Ships on Aug 31, 2026

$ 2,895.00 USD

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$ 2,895.00 USD

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Improved power and throttle response

XForce - Downpipe Kit - F22 M235i

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T#:50934838

Part#: ESBM118KITB

Ships in 2 Business Days

Sale - Save 10% $ 585.00

This product was last offered at the strikethrough price on
06-30-2026

$ 526.50 USD

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$ 585.00

This product was last offered at the strikethrough price on
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$ 526.50 USD

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Provides a cleaner, more efficient exit for exhaust gases, reducing under-hood heat and improving overall engine health.

Connecting Sleeves for OEM Downpipe

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T#:351451

Part#: 985522

Ships on Oct 13, 2026

$ 740.99 USD

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$ 740.99 USD

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100% handcrafted in Italy. Stainless steel construction. Legendary sound!

Supersprint BMW Series 02 2002 Turbo '73 -> '75 Turbo downpipe ...

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T#:597807

Part#: 40311

Ships on Oct 13, 2026

$ 698.99 USD

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$ 698.99 USD

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Evolution Racewerks Sports Series Metallic High Flow Catted Downpipe ...

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T#:44529448

Part#: TO-EXH001CAT

Ships in 8 Business Days

Starting at $ 945.00 USD

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Starting at $ 945.00 USD

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Restrictions in the exhaust system rob horsepower and torque, especially on turbocharged cars. Thus, removing exhaust flow restrictions will increase horsepower and torque significantly. The factory catalytic converter found in the factory downpipe is a big culprit of this and is a major exhaust flow restriction. Evolution Racewerks' Sports Series 4.5" High Flow Catted Downpipe is the perfect solution to improve your BMW's power capabilities! Featuring a high-flow 200-cell metallic catalytic converter and 4.5"/4" mandrel-bent piping, this downpipe is designed to provide the highest exhaust flow possible without triggering a Check Engine Light. Additionally, this downpipe can be used with your stock or aftermarket* exhaust systems, eliminating the need to have a muffler shop adapt this downpipe to your existing exhaust system.

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Active Autowerke A-Flow Catted Downpipes - S63/N63

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For Model Years 2010-2012 Only

T#:51110141

Part#: 11-041AF

Ships in 4 Business Days

$ 2,279.00 USD

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For the BMW enthusiast seeking an aggressive upgrade for their 2010–2012 X5M or X6M without the drawbacks of "stinky" exhaust or frequent error codes, Active Autowerke offers the Aflow Catted Downpipes. These units provide the performance benefits typically associated with track-only pipes while maintaining high-flow catalytic efficiency. This design prevents the raw fuel odor and excessive cabin drone often found in catless setups, making them the ideal choice for a performance-oriented daily driver. Each set is custom-made in Miami, ensuring an exact, surgical fit to the factory mounting points. By utilizing high-quality casted V-band flanges and premium materials, these downpipes offer a reliable, leak-free solution that enhances the sophisticated V8 exhaust note without triggering the Check Engine Light (CEL). Key Features: No CEL Guarantee: Advanced Aflow catalyst design avoids catalytic efficiency warnings on the dashboard. Refined Exhaust Note: Enhances the natural V8 growl while maintaining high-end luxury refinement. Cast V-Band Connections: Precision upper flanges ensure a perfect, factory-like seal to the turbo housing. Direct Bolt-On: Replaces bulky OEM ceramic converters with no cutting or welding required. Thermal Management: Efficiently handles the high heat output of the BMW twin-turbo V8 platform. U.S. Manufacturing: Fabricated in-house to meet Active Autowerke’s high standards of quality control. Specifications: Primary Material: TIG-Welded 304 Stainless Steel. Manufacturing Location: Miami, FL, USA. Inlet Type: Casted Stainless Steel Flange. Weight Reduction: Significantly lighter than the heavy factory ceramic catalytic assemblies. Finish: Industrial brushed stainless. Build Time: Custom made-to-order (Approx. 2 weeks).

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Active Autowerke GESI Catted Downpipe - B58N

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For Model Years 2024+ - Please call in with vin prior to purchase

T#:51320821

Part#: 11-062N

Ships on Jul 27, 2026

$ 1,899.00 USD

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$ 1,899.00 USD

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For the owner of a late-model BMW who demands a balance of high-end performance and sophisticated daily drivability, Active Autowerke offers the B58N Gen-3 GESI Catted Downpipe. Built with a focus on long-term reliability and environmental standard compliance, this downpipe features an EPA-registered GESI G-Sport catalytic converter. These 400-cell metallic substrates are furnace-braised to the mantle, offering outstanding resistance to thermal shock and vibration. The industrial-grade 304 stainless steel construction ensures the downpipe will withstand years of heat cycles without degrading. This system is a true "plug-and-play" solution that enhances the B58's deep, throaty exhaust note while keeping emissions levels in check and the dashboard clear of errors. Key Features: 49-State Legal: Features an EPA-registered catalyst that is fully OBD2 compliant (excludes vehicles registered in CA). Superior Durability: Constructed entirely from heavy-duty 304 stainless steel with a brushed finish. Proprietary Catalyst Loading: Precious metal technology ensures the reduction of harmful emissions and eliminates raw fuel odors. OEM+ Fitment: Meticulously test-fitted on a dedicated fixture to guarantee a perfect seal with factory turbo and exhaust connections. Comprehensive Kit: Available with an optional turbo flange gasket to ensure a fresh, leak-free installation. Specifications: Type: Signature Series Valved GESI Catted Downpipe. SKU: 11-062N. Catalyst Rating: Rated for high-output applications while maintaining operational efficiency. Hardware: Includes lower mounting brackets and necessary flex section. Vehicle Fitment (US Models Only): * 2025+ BMW X3 40i / X3-M50i (G45) 2025+ BMW X5 40i (G05 LCI) / X7 40i (G07 LCI) 2025+ BMW 540i (G60) / 740i (G70)

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Evolution Raceworks Sports Series 4" High Flow Catted Downpipe - B46 ...

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T#:29267518

Part#: BM-EXH019CAT

Ships in 8 Business Days

$ 895.00 USD

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Crafted to enhance the exhaust flow of your B46-equipped BMW, this downpipe is equipped with a 200-cell high-flow catalytic converter and mandrel bent 4" piping. With a sleek brushed steel finish, this downpipe is constructed entirely from 100% stainless steel and TIG-welded for ultimate durability, surpassing the factory catalyst.

Key Features:

1. Elevated initial torque curve 2. Enhanced throttle response and quicker turbocharger spooling 3. Precisely CNC machined turbocharger V-band flange 4. Maintains the factory "ball-type" v-band connector 5. Compatible with both factory and aftermarket exhaust systems 6. Tested for durability on the track 7. Proudly made in the USA

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E71 X6 50i Supersprint Turbo Right Downpipe with Cat

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T#:184263

Part#: 981721

Ships in 4 Business Days

$ 3,337.99 USD

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Free ground shipping!

Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound. Even at a premium price Supersprint is an unbeatable exhaust system because every aspect is done to such a high level. A Supersprint exhaust rewards you with a terrific sound, long lasting construction and excellent fitment. The Supersprint sound is very 'European' which fits the sporting sophistication of BMWs perfectly. Most systems are also modular - sections can be added or removed to custom tailor the exhaust sound to your preferance. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud. Most Supersprint systems are built with larger diameter piping to improve exhaust flow which helps the engine do less work and make more horsepower! Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation!

NOTE: Supersprint engineers and manufactures complete exhaust systems. This part was designed to be used with the rest of the Supersprint system on this car but may be used on its own. Contact us for more details.

This product modifies (but does not remove or defeat) emissions equipment. For this reason this product may not be CARB compliant, and therefore not emissions legal in some states. Consult local laws and regulations in your area. For more information on this product, feel free to contact our sales department.

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Active Autowerke S63 N63 A-Flow Catted Downpipes

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T#:51110136

Part#: 11-041AB

Ships in 4 Business Days

$ 2,279.00 USD

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$ 2,279.00 USD

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Active Autowerke’s Aflow Catted Downpipes provide a "no-compromise" solution for the G-body enthusiast who wants high-flow performance without the drawbacks of a track-only "catless" setup. These downpipes feature advanced metallic high-flow catalysts that satisfy onboard diagnostic requirements, meaning you can enjoy increased power without the headache of a Check Engine Light (CEL). By utilizing premium 304 stainless steel and a low-restriction design, these pipes are built to withstand the intense thermal cycles of a twin-turbo V8 while delivering a deep, aggressive exhaust note. This variant is a true bolt-on upgrade that preserves the daily driveability and luxury experience of your BMW while significantly improving its performance ceiling. Key Features: No CEL Operation: Engineered to work with factory emissions monitors for a dashboard-clear experience. Streamlined Exhaust Path: Mandrel-bent 3" piping with minimal bends for smooth, high-velocity exhaust gas flow. Precision Fitment: Developed through extensive R&D to provide a factory-like bolt-on installation. Hand-Made in the USA: Fabricated in-house at Active Autowerke’s Miami facility to ensure surgical quality control. Vibration Resistance: Robust TIG welding and heavy-duty brackets ensure longevity even under aggressive driving conditions. Specifications: Primary Material: Brushed 304 Stainless Steel. Inlet/Outlet: Precision cast V-band inlet and direct-fit outlet. Flow Rating: Significantly higher CFM than restrictive factory ceramic converters. Installation: 100% Bolt-on; no cutting or welding required. Finish: Natural Stainless. Lead Time: Typically custom made-to-order (Approx. 2-week build time).

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ARMYTRIX Stainless Steel Downpipe - Sport Cat

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T#:12643095

Part#: BMF43-CD

Ships on Jul 31, 2026

$ 1,764.00 USD

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$ 1,764.00 USD

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Active Autowerke GESI Catted Downpipes - G90 M5

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T#:51285673

Part#: 11-142

Ships on Jul 27, 2026

$ 3,324.00 USD

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$ 3,324.00 USD

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For the owner of the G90 M5 who demands both high performance and environmental responsibility, Active Autowerke offers the GESI Catted Downpipes. These units feature genuine GESi G-Sport Ultra High Output Catalytic Converters, which are EPA-registered and fully OBD2 compliant (excluding California). Utilizing proprietary precious metal loading, these 400-cell catalysts reach operational efficiency within just 9 seconds of startup, drastically reducing emissions and eliminating the raw fuel smell common with catless systems. Hand-made in Miami, FL, and constructed from heavy-duty 304 stainless steel, these downpipes provide a durable, high-quality performance upgrade that integrates seamlessly with factory mounting points. Key Features: EPA Registered & Compliant: 49-state legal and fully OBD2 compliant for 1996+ vehicles. Cast Stainless V-Bands: Features precision-casted upper V-bands for a perfect, leak-free seal to the turbochargers. Reduced Radiant Heat: Lowering backpressure helps pull heat away from the turbochargers and engine components. Precision Fabrication: Meticulously TIG welded and test-fitted on a dedicated G90 M5 fixture. Standard-Setting Reliability: The 304 stainless substrate is furnace-braised to the mantle for outstanding resistance to vibration. Specifications: SKU: 11-142. Inlet Type: Precision Casted Stainless V-Band. Substrate: Metal core 400 CPSI catalyst. Warranty: 5-year/50,000-mile warranty on shell/tube ends; 2-year/25,000-mile on catalyst core (void if excessive burble tune is used). Manufacturing: Made in Miami, Florida, USA. Vehicle Fitment: 2025+ BMW M5 (G90 Sedan and G99 Touring) with the S68 V8 Hybrid engine.

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High Performance Catalytic Converter with Tuning Downpipes

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T#:12118972

Part#: 90812000

Ships in 9 Business Days

$ 2,487.99 USD

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$ 2,487.99 USD

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Downpipes W Active A-flow Cats - F10/F12 M5/M6

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T#:51110145

Part#: 11-093A

Ships in 4 Business Days

$ 2,279.00 USD

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Efficiency in a forced-induction engine is determined by the pressure differential across the turbine wheel. Active Autowerke's Aflow Catted Downpipes maximize this differential by utilizing a streamlined, low-restriction design. Each set is hand-made from premium 304 stainless steel and features furnace-braised substrates for maximum longevity under the extreme temperatures of the "hot-V" turbo configuration. The integrated 400-cell catalytic converters reach operational efficiency within just 9 seconds of startup, ensuring the system meets modern OBD2 requirements while supporting up to 800 HP without a loss in performance. Key Features: Precision Fitment: Each unit is meticulously TIG-welded and checked against master jigs to guarantee a perfect bolt-on installation with no cutting or welding. EPA Compliant: 49-state EPA registered and fully OBD2 compliant (Excludes California). Thermal Management: Engineered to reduce radiant heat in the engine bay compared to restrictive factory units. High-Flow Catalyst Substrate: 304 stainless steel substrate furnace-braised to the mantle for outstanding vibration and heat resistance. Comprehensive Protection: Covered by a 5-year/50,000-mile structural warranty and a 2-year core warranty. Specifications: Inlet Type: Precision-casted 3.5" Stainless Steel V-Band Outlet Diameter: 3.0" Mandrel-Bent Tubing Catalyst Matrix: 400 Cells Per Square Inch Operating Temperature: Tested to withstand up to 1,500°F Vehicle Fitment: * 2011–2016 BMW M5 (F10) 2012–2018 BMW M6 Coupe / Convertible / Gran Coupe (F12/F13/F06) Custom Build Time: Typically made-to-order (Approx. 2-week lead time)

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High Performance Catalytic Converter With Tuning Downpipe

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T#:12118973

Part#: 90812031

Ships in 9 Business Days

$ 3,375.99 USD

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$ 3,375.99 USD

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Large Bore Downpipes And Hi-Flow Sports Cats - F80/F82

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For Vehicles Produced before 01/19

T#:593554

Part#: SSXBM1030

Ships in 4 Business Days

Sale - Save 10% $ 3,596.99

This product was last offered at the strikethrough price on
07-01-2026

$ 3,236.64 USD

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$ 3,596.99

This product was last offered at the strikethrough price on
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$ 3,236.64 USD

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With in-house production and engineering in the United Kingdom, they have been designing and developing exhaust systems for over 32 years. This experience has helped put Milltek on the map when it comes to performance exhausts, with offerings that range from Audi/Volkswagen to Porsche, BMW, and even Bentley. But, they don't stop there. Milltek has also made its presence felt in the motorsport community. Through partnerships with various race teams throughout the world, Milltek has gathered feedback on ways to improve their systems from enthusiasts at every level. Constructed of type-304 aircraft grade stainless steel, the quality is top-notch. To take it a step further, Milltek offers a lifetime warranty to the original purchaser.

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F22 228i, F30/F31/F34 328i, F32 428i Supersprint Turbo Downpipe with ...

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T#:184388

Part#: 987321

Ships in 4 Business Days

$ 2,010.00 USD

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$ 2,010.00 USD

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Hi-Flow Sports Catted Downpipes - F80/F82

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Requires Milltek Catback Exhaust

T#:593561

Part#: SSXBM1127

Ships in 4 Business Days

Sale - Save 10% $ 2,584.99

This product was last offered at the strikethrough price on
07-01-2026

$ 2,325.65 USD

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$ 2,584.99

This product was last offered at the strikethrough price on
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$ 2,325.65 USD

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With in-house production and engineering in the United Kingdom, they have been designing and developing exhaust systems for over 32 years. This experience has helped put Milltek on the map when it comes to performance exhausts, with offerings that range from Audi/Volkswagen to Porsche, BMW, and even Bentley. But, they don't stop there. Milltek has also made its presence felt in the motorsport community. Through partnerships with various race teams throughout the world, Milltek has gathered feedback on ways to improve their systems from enthusiasts at every level. Constructed of type-304 aircraft grade stainless steel, the quality is top-notch. To take it a step further, Milltek offers a lifetime warranty to the original purchaser.

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Supersprint Section 2 X-Pipe

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T#:351480

Part#: 985513

Ships in 4 Business Days

$ 1,239.99 USD

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100% handcrafted in Italy. Stainless steel construction. Legendary sound!

Active Autowerke GESI Catted Downpipes - S63 N63

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T#:397488

Part#: 11-041

Ships in 4 Business Days

5% off MSRP $ 2,999.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 2,849.99 USD

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5% off MSRP

$ 2,999.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 2,849.99 USD

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Active Autowerke is proud to bring you our hand made Signature S63/N63 Downpipes for the twin-turbo V8 BMW X5M, X6M, 550i, 650i, X5, X6 models. This variant includes a pair of 4.5" ultra high flow GESI catalytic converter that will NOT produce a CEL!

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Supersprint BMW F20 / F21 M135i (320 Hp) 2012 -> 2014 Downpipe kit + ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:588155

Part#: 988541

Ships in 4 Business Days

$ 3,087.99 USD

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$ 3,087.99 USD

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Evolution Racewerks Performance Downpipes - F97 X3M, F98 X4M ...

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T#:599274

Part#: BM-EXH025

Ships in 8 Business Days

Starting at $ 1,195.00 USD

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Starting at $ 1,195.00 USD

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On a turbocharged vehicle, any restriction in the exhaust system reduces peak horsepower. By removing the factory catalytic converter, most of this restriction is removed gaining advantages in more than just peak horsepower. The factory downpipe, while excellent for maintaining strict emission regulations, does nothing to unlock the performance of a turbocharged engine. Due to an internal honeycomb structure that the exhaust gasses must pass through, flow is massively reduced. Additionally, this honeycomb causes turbulence after the converter which slows exhaust flow even further and causes more restriction. If you've ever tried to blow through a coffee straw, you know how your car feels. This not only limits how fast the turbo can spool or come up to speed but also how much air it can move in general. When the internal honeycomb structure is removed in favor of a straight and hollow piece, these issues are alleviated. Not only can the turbocharger come up to max rpm faster, is does this more efficiently and with less work since there is no back-pressure against the turbine wheel. Turbo lag becomes a thing of the past and because of this, the powerband shifts and massive top-end gains can be felt. Constructed out of 100% 304-grade stainless steel and fully mandrel bent, you can be sure that as much time has been put into construction as development. They are 100% TIG welded by in-house fabricators and built in the USA. The factory turbocharger turbine housing utilizes a V-Band flange which Evolution have duplicated and CNC machined cut out of billet 304 stainless steel. Stainless Steel CNC machined O2 sensor and laser cut brackets are TIG welded using stainless steel rods and the O2 sensor is positioned at the factory location.

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Active Autowerke S63 N63 A-Flow Catted Downpipes

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For 2014+ model years only

T#:51075079

Part#: 11-041A

Ships in 4 Business Days

$ 2,279.00 USD

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$ 2,279.00 USD

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For the BMW owner seeking increased performance without the drawbacks of a "catless" system, the Active Autowerke Aflow Catted Downpipes offer the perfect solution. These downpipes feature high-flow metallic catalytic converters that are specifically designed to maintain exhaust efficiency while preventing the dreaded Check Engine Light (CEL). Unlike track-only pipes that can produce raw fuel odors and cabin drone, the Aflow series maintains a sophisticated, refined exhaust note suitable for a luxury daily driver. Each set is custom-made in-house to ensure an exact bolt-on fit, providing a reliable solution that satisfies both the driver’s demand for power and the vehicle’s onboard diagnostic requirements. Key Features: No CEL Guarantee: Advanced Aflow catalyst technology prevents catalytic efficiency dashboard warnings. Refined Exhaust Note: Provides an aggressive V8 growl while maintaining cabin comfort for daily use. Bolt-On Installation: No cutting or welding required; replaces the bulky factory units directly. Thermal Resilience: Built to withstand the high temperatures generated by the S63 and N63 twin-turbo engines. Safe for Occupants: Reduces harmful emissions and raw exhaust odors compared to catless alternatives. Specifications: Primary Material: Brushed 304 Stainless Steel Fitting: Direct OEM Replacement (Bolt-on) Manufacturing Location: Hand-made in Miami, FL Weight Reduction: Lighter than the heavy, ceramic-core factory catalytic converters Surface Finish: Natural Stainless Lead Time: Custom made-to-order (Approx. 2 weeks)

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Milltek Sport - Large Bore Downpipes And Hi-Flow Sports Cats - F87 M2...

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T#:591375

Part#: SSXBM1093

Ships in 4 Business Days

Sale - Save 10% $ 2,179.00

This product was last offered at the strikethrough price on
07-01-2026

$ 1,961.10 USD

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Sale - Save 10%

$ 2,179.00

This product was last offered at the strikethrough price on
07-01-2026

$ 1,961.10 USD

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With in-house production and engineering in the United Kingdom, they have been designing and developing exhaust systems for over 32 years. This experience has helped put Milltek on the map when it comes to performance exhausts, with offerings that range from Audi/Volkswagen to Porsche, BMW, and even Bentley. But, they don't stop there. Milltek has also made its presence felt in the motorsport community. Through partnerships with various race teams throughout the world, Milltek has gathered feedback on ways to improve their systems from enthusiasts at every level. Constructed of type-304 aircraft grade stainless steel, the quality is top-notch. To take it a step further, Milltek offers a lifetime warranty to the original purchaser.

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Evolution Racewerks Sport Series High Flow Catted Downpipes - Brushed...

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T#:6061577

Part#: BM-EXH026SCAT

Ships in 8 Business Days

$ 2,395.00 USD

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$ 2,395.00 USD

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Restrictions in the exhaust system rob horsepower and torque, especially on turbocharged cars. Thus, removing as many exhaust flow restrictions as possible will increase horsepower and torque significantly. The factory catalytic converter found in the factory downpipe is a big culprit of this and is a major exhaust flow restriction. Evolution Racewerks use a 200 cell metallic core for their Sports Series High Flow Catted Downpipes. By having fewer cells per square inch, these individual "cells" are bigger in size thus allowing exhaust gas to pass through them more easily. Therefore, the lower the cell count, the higher the flow. Higher flow = more power, faster turbo spool up (less turbocharger lag) and better throttle response. Bottom line, faster. The benefits of a metallic catalytic converter vs a ceramic, like the factory, is that it can take higher temperatures and is more durable (last longer). They are also lighter than their ceramic counterparts. The Evolution Racewerks catted downpipe is constructed out of grade 304 stainless steel and utilizes mandrel bent 3" piping. They are 100% TIG welded by in-house fabricators and built in the USA. The factory turbocharger turbine housing utilizes a V-Band flange which has been duplicated and CNC machined cut out of billet 304 stainless steel. Stainless Steel CNC machined O2 sensor and laser cut brackets are TIG welded using stainless steel rods. The O2 sensor is positioned at the factory location. Evolution's downpipes are designed to fit perfectly with either the factory exhaust system or your aftermarket exhaust system. There are no compatibility issues whatsoever with any exhaust designed to bolt up to stock downpipes. The downpipes will come by default with a brushed finish. Features & Specifications: High Flow 200 cell metallic catalytic converter used Higher Max Horsepower Power Curve Higher Initial Torque Curve. Torque curve hits faster and higher and longer. Mandrel Bent 3" piping. Smooth transition to the exhaust system - Better throttle response and faster turbo spool-up times. 100% Stainless Steel Construction 100% TIG welded for better quality welds Precision CNC machined turbocharger V-Band flange. Retains factory slip-on style connection. Compatible with the factory or aftermarket exhaust systems. Track tested durability. Includes all hardware for complete installation. Limited Lifetime Warranty. CAUTION: This product is intended for OFF ROAD COMPETITION USE ONLY. Not legal for use on pollution-controlled vehicles upon public roads/highways. THIS PRODUCT IS FOR SALE FOR ALL 49 STATES EXCLUDING CALIFORNIA. THIS ITEM IS NOT FOR SALE, INSTALLATION, OR USE ON LICENSED VEHICLES IN THE STATE OF CALIFORNIA.

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Active Autowerke Performance Catted Downpipes - Flanged - E70/71 E60/...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Model Years 2010-2012 Only - VIN Required for Purchase

T#:22822600

Part#: 11-041F

Ships on Jul 27, 2026

5% off MSRP $ 2,999.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 2,849.99 USD

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5% off MSRP

$ 2,999.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 2,849.99 USD

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The S63 and N63 twin-turbo V8s are world-class powerplants, but they’ve got a breathing problem. From the factory, your BMW X5M, X6M, 550i, or 650i is suffocating under massive backpressure caused by restrictive, bulky catalytic converters that trap heat and kill momentum. If you want real power, you have to let those turbos spin. Active Autowerke’s Signature High-Flow Downpipes are the ultimate "no-compromise" upgrade for the serious BMW enthusiast. Hand-fabricated in Miami, these 3.0" downpipes utilize GESi G-Sport Ultra High Output technology. You get the raw performance and rapid spool of a track setup with the refined, odorless experience of a daily driver—and most importantly, no Check Engine Light. Why These Downpipes Belong on Your BMW: Turbo performance is all about the pressure differential. By clearing the path behind the turbine wheel, you allow the turbos to work significantly less to produce significantly more. Instant Turbo Response: Experience a massive reduction in lag with quicker spool-up and instant throttle tip-in. Massive Power Ceiling: The 4.5" GESi 400-cell cores are rated for 500hp to 850hp, ensuring they won't become a bottleneck as you climb the ladder of modifications. Clean & Odorless: Forget the "gas station" smell of catless downpipes. These proprietary precious-metal catalysts keep the air clean and your cabin comfortable. Hand-Built Precision These aren't mass-produced units. Each set is TIG-welded 304 stainless steel with cast upper V-band flanges for a factory-perfect, leak-free seal. Because Active Autowerke builds these in-house, the fitment is surgical—designed for a straightforward bolt-on installation with no cutting or welding required. Turner Fitment Note: To guarantee 100% accuracy for your build, please provide your VIN at checkout. Note: These are F-chassis specific; G-body vehicles with the N63B engine require a different configuration. Core Features: No CEL Guarantee: Optimized for catalytic efficiency to keep your dashboard clear. 49-State Legal: EPA Registered and fully OBD2 compliant (Excludes CA). Built for Heat: Rated to withstand up to 1,500°F and reaches operational efficiency in just 9 seconds. Legendary Durability: 304 stainless substrate is furnace-braised to the mantle for maximum vibration resistance. Warranty Protected: Includes a 5-year/50,000-mile structural warranty and a 2-year/25,000-mile catalyst core warranty.* Technical Specs: Material: TIG-Welded 304 Stainless Steel Tubing: Full 3.0" (76mm) Mandrel-Bent Piping Catalyst: GESi Ultra High Output (400 CPI) HP Rating: 500hp - 850hp Lead Time: Custom made-to-order (Approx. 2 weeks) *A Note on Burble Tunes: We love a good exhaust crackle as much as anyone, but "aggressive" burble or pop maps physically destroy catalytic substrates. Use of such tunes will void the warranty on the GESi core.

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Active Autowerke Performance Catted Downpipes - G05/06 X5 X6, G14/15/...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with the N63B engine (2020+) - VIN Required for Purchase

T#:22822601

Part#: 11-041B

Ships on Jul 27, 2026

$ 2,849.99 USD

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$ 2,849.99 USD

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Unleash the Beast: Active Autowerke Signature GESI High-Flow Downpipes The S63 and N63 twin-turbo V8s are world-class engines, but they’ve got a breathing problem. From the factory, your BMW X5M, X6M, 550i, or 650i is suffocating under massive backpressure caused by restrictive, bulky catalytic converters. If you want real power, you have to let those turbos spin. Active Autowerke’s Signature High-Flow Downpipes are the ultimate "no-compromise" upgrade. Hand-fabricated in Miami, these 3.0" downpipes utilize GESi G-Sport Ultra High Output technology. You get the raw performance of a track setup with the refined, odorless experience of a street car—and most importantly, no Check Engine Light. Why These Downpipes Belong on Your BMW: Turbo performance is all about the pressure differential. By clearing the path behind the turbine wheel, you allow the turbos to work significantly less to produce significantly more. Turbo Response: Experience a massive reduction in lag with quicker spool-up and instant throttle tip-in. Massive Power Ceiling: The 4.5" GESi 400-cell cores are rated for 500hp to 850hp, ensuring they won't become a bottleneck as you climb the ladder of modifications. Clean & Odorless: Forget the "gas station" smell of catless downpipes. These proprietary precious-metal catalysts keep the air clean and your cabin comfortable. Hand-Built Precision These aren't mass-produced units. Each set is TIG-welded 304 stainless steel with cast upper V-band flanges for a factory-perfect seal. Because Active Autowerke builds these in-house, the fitment is surgical—no "massaging" or welding required for a secure bolt-on install. Turner Fitment Note: To guarantee 100% accuracy for your build, please provide your VIN at checkout. Note: These are F-chassis specific; G-body vehicles with the N63B engine require a different configuration. Core Features: No CEL Guarantee: Optimized for catalytic efficiency to keep your dashboard clear. 49-State Legal: EPA Registered and fully OBD2 compliant (Excludes CA). Built for Heat: Rated to withstand up to 1,500°F and reaches operational efficiency in just 9 seconds. Legendary Durability: 304 stainless substrate is furnace-braised to the mantle for maximum vibration resistance. Warranty Protected: Includes a 5-year/50,000-mile structural warranty and a 2-year/25,000-mile catalyst core warranty.* Technical Specs: Material: TIG-Welded 304 Stainless Steel Tubing: Full 3.0" (76mm) Mandrel-Bent Piping Catalyst: GESi Ultra High Output (400 CPI) HP Rating: 500hp - 850hp Lead Time: Custom made-to-order (Approx. 2 weeks) *A Note on Burble Tunes: We love a good exhaust crackle as much as anyone, but "aggressive" burble or pop maps physically destroy catalytic substrates. Use of such tunes will void the warranty on the GESi core.

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Evolution Racewerks Sport Series High Flow Catted Downpipes - Polishe...

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T#:6061578

Part#: BM-EXH026PCAT

Ships in 8 Business Days

$ 2,495.00 USD

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$ 2,495.00 USD

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Restrictions in the exhaust system rob horsepower and torque, especially on turbocharged cars. Thus, removing as many exhaust flow restrictions as possible will increase horsepower and torque significantly. The factory catalytic converter found in the factory downpipe is a big culprit of this and is a major exhaust flow restriction. Evolution Racewerks use a 200 cell metallic core for their Sports Series High Flow Catted Downpipes. By having fewer cells per square inch, these individual "cells" are bigger in size thus allowing exhaust gas to pass through them more easily. Therefore, the lower the cell count, the higher the flow. Higher flow = more power, faster turbo spool up (less turbocharger lag) and better throttle response. Bottom line, faster. The benefits of a metallic catalytic converter vs a ceramic, like the factory, is that it can take higher temperatures and is more durable (last longer). They are also lighter than their ceramic counterparts. The Evolution Racewerks catted downpipe is constructed out of grade 304 stainless steel and utilizes mandrel bent 3" piping. They are 100% TIG welded by in-house fabricators and built in the USA. The factory turbocharger turbine housing utilizes a V-Band flange which has been duplicated and CNC machined cut out of billet 304 stainless steel. Stainless Steel CNC machined O2 sensor and laser cut brackets are TIG welded using stainless steel rods. The O2 sensor is positioned at the factory location. Evolution's downpipes are designed to fit perfectly with either the factory exhaust system or your aftermarket exhaust system. There are no compatibility issues whatsoever with any exhaust designed to bolt up to stock downpipes. The downpipes will come by default with a brushed finish. Features & Specifications: High Flow 200 cell metallic catalytic converter used Higher Max Horsepower Power Curve Higher Initial Torque Curve. Torque curve hits faster and higher and longer. Mandrel Bent 3" piping. Smooth transition to the exhaust system - Better throttle response and faster turbo spool-up times. 100% Stainless Steel Construction 100% TIG welded for better quality welds Precision CNC machined turbocharger V-Band flange. Retains factory slip-on style connection. Compatible with the factory or aftermarket exhaust systems. Track tested durability. Includes all hardware for complete installation. Limited Lifetime Warranty. CAUTION: This product is intended for OFF ROAD COMPETITION USE ONLY. Not legal for use on pollution-controlled vehicles upon public roads/highways. THIS PRODUCT IS FOR SALE FOR ALL 49 STATES EXCLUDING CALIFORNIA. THIS ITEM IS NOT FOR SALE, INSTALLATION, OR USE ON LICENSED VEHICLES IN THE STATE OF CALIFORNIA.

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Downpipe W Active A-flow Cat - F3x/F87 M2

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:51110147

Part#: 11-040A

Ships in 4 Business Days

$ 1,399.00 USD

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$ 1,399.00 USD

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Active Autowerke’s Aflow Catted Downpipe offers the perfect balance for the BMW owner who demands high performance but requires daily-driver refinement. Unlike track-only "straight pipes," the Aflow system utilizes a sophisticated metallic substrate catalytic converter that significantly reduces harmful emissions and raw fuel odors. This allows you to enjoy the power of a high-flow exhaust while maintaining a clean cabin environment and remaining OBD2 compliant. Each unit is custom-made in Miami and features cast upper flanges to ensure a factory-perfect, leak-free seal every time. Key Features: Clean Performance: High-flow catalyst virtually eliminates the raw fuel smell associated with aftermarket downpipes. Precision Engineering: Features a casted stainless steel upper V-band for a surgical fit against the turbo housing. OBD2 Compliance: Engineered to satisfy factory emissions monitors, keeping the dash clear of "Efficiency" codes. Refined Acoustics: Increases the exhaust volume under wide-open throttle while remaining quiet and sophisticated during highway cruising. Heat Management: Designed to withstand the intense thermal cycles of a high-output turbocharged engine. Specifications: Catalyst Cell Density: Optimized for high-flow performance and emissions scrubbing Fabrication: Hand-made in Miami, Florida, USA Inlet Type: Casted Stainless Steel V-Band Weight: Significantly lighter than the heavy factory ceramic catalytic converter Vehicle Fitment: * 2014–2016 BMW M235i (F22) 2012–2015 BMW 335i (F30/F31/F34) 2014–2016 BMW 435i (F32/F33/F36) 2016–2018 BMW M2 (F87 - N55 Engine Only)

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Evolution Racewerks Sport Series High Flow Catted Downpipes - Thermal...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:6061579

Part#: BM-EXH026TBCAT

Ships in 8 Business Days

$ 2,595.00 USD

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$ 2,595.00 USD

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Restrictions in the exhaust system rob horsepower and torque, especially on turbocharged cars. Thus, removing as many exhaust flow restrictions as possible will increase horsepower and torque significantly. The factory catalytic converter found in the factory downpipe is a big culprit of this and is a major exhaust flow restriction. Evolution Racewerks use a 200 cell metallic core for their Sports Series High Flow Catted Downpipes. By having fewer cells per square inch, these individual "cells" are bigger in size thus allowing exhaust gas to pass through them more easily. Therefore, the lower the cell count, the higher the flow. Higher flow = more power, faster turbo spool up (less turbocharger lag) and better throttle response. Bottom line, faster. The benefits of a metallic catalytic converter vs a ceramic, like the factory, is that it can take higher temperatures and is more durable (last longer). They are also lighter than their ceramic counterparts. The Evolution Racewerks catted downpipe is constructed out of grade 304 stainless steel and utilizes mandrel bent 3" piping. They are 100% TIG welded by in-house fabricators and built in the USA. The factory turbocharger turbine housing utilizes a V-Band flange which has been duplicated and CNC machined cut out of billet 304 stainless steel. Stainless Steel CNC machined O2 sensor and laser cut brackets are TIG welded using stainless steel rods. The O2 sensor is positioned at the factory location. Evolution's downpipes are designed to fit perfectly with either the factory exhaust system or your aftermarket exhaust system. There are no compatibility issues whatsoever with any exhaust designed to bolt up to stock downpipes. The downpipes will come by default with a brushed finish. Ceramic Thermal Coating - The purpose of ceramic coating downpipes is to keep heat from the exhaust gases inside the downpipe from radiating out. This keeps underhood temperatures lower and less heat absorption by nearby parts/surfaces. Another added benefit is that by keeping in heat (energy) in the exhaust gases inside the downpipe, exhaust flow velocities stay up, resulting in lower backpressure. The ceramic coating also adds additional corrosion resistance. Evolution utilizes the best ceramic coating possible. Their thermal coating can resist up to 2000F of heat. It is available in black only (all the other colors cannot withstand the heat that high). Features & Specifications: High Flow 200 cell metallic catalytic converter used Higher Max Horsepower Power Curve Higher Initial Torque Curve. Torque curve hits faster and higher and longer. Mandrel Bent 3" piping. Smooth transition to the exhaust system - Better throttle response and faster turbo spool-up times. 100% Stainless Steel Construction 100% TIG welded for better quality welds Precision CNC machined turbocharger V-Band flange. Retains factory slip-on style connection. Compatible with the factory or aftermarket exhaust systems. Track tested durability. Includes all hardware for complete installation. Limited Lifetime Warranty. CAUTION: This product is intended for OFF ROAD COMPETITION USE ONLY. Not legal for use on pollution-controlled vehicles upon public roads/highways. THIS PRODUCT IS FOR SALE FOR ALL 49 STATES EXCLUDING CALIFORNIA. THIS ITEM IS NOT FOR SALE, INSTALLATION, OR USE ON LICENSED VEHICLES IN THE STATE OF CALIFORNIA.

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Active Autowerke Signature Active Aflow Catted Downpipe - A90/A91 Sup...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Please call in with VIN before purchase

T#:51426472

Part#: 11-564A

Ships on Jul 27, 2026

$ 1,399.00 USD

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$ 1,399.00 USD

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For Supra owners who demand professional-grade performance without the legal and olfactory drawbacks of a catless system, Active Autowerke incorporates the industry's most advanced catalytic technology. This downpipe uses either the GESi G-Sport UHO or the Active Aflow catalyst, both of which are EPA registered and 49-state legal. These catalysts reach operational efficiency within just 9 seconds of startup, ensuring that your vehicle remains OBD2 compliant during emissions testing. By eliminating the "Check Engine Light" without the use of O2 spacers or software hacks, this downpipe remains a reliable choice for street-driven vehicles that see frequent track use. Key Features OBD2 Compliance: Fully compliant with onboard diagnostic systems (1996 and newer) for a worry-free ownership experience. 400 Cell Substrate: Strikes the perfect balance between high-velocity exhaust flow and effective emissions reduction. Thermal Efficiency: Rapid light-off time (approx. 9 seconds) ensures the cat is functioning almost immediately upon engine start. Durability: Substrate is furnace-brazed to the mantle, preventing the internal core from shifting or breaking under high-boost vibration. Miami Made: Proudly designed and hand-built in Miami, Florida, ensuring high-tier American manufacturing quality. Specifications Vehicle Fitment: 2020–2024 Toyota Supra (A90/A91) 3.0L B58 Engine. Catalyst Type: 4.5" GESi UHO-Series Gen 2 / Active Aflow. Cell Density: 400 Cells Per Square Inch. Taper Profile: 4.5" Turbo Connection → 3.5" Flex Section → 80mm OEM Outlet. Warranty: 5-Year / 50,000-Mile warranty on the shell/ends; 2-Year / 25,000-Mile on the catalyst core. Legal Status: EPA Compliant (49-State Legal; Not CARB registered for California).

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Active Autowerke GESI Catted Downpipe - B58N M340i/440i

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Model Years 2025+ - Please call in with vin prior to purchase

T#:51320822

Part#: 11-062G

Ships on Jul 27, 2026

$ 2,374.00 USD

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$ 2,374.00 USD

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For the owner of a brand new 2025+ M340i or M440i, Active Autowerke provides a "no-compromise" performance upgrade that prioritizes durability and emissions compliance. This downpipe features an integrated GESI G-Sport catalytic converter, which is EPA-registered and fully OBD2 compliant (excluding California). These high-flow units use proprietary precious metal loading to reduce harmful emissions and eliminate the raw fuel odors common with "catless" systems. The 400-cell stainless steel substrate is furnace-braised to the mantle for outstanding resistance to vibration and thermal shock, ensuring that your performance gains remain trouble-free over the life of the vehicle.Key Features:49-State Legal: EPA-registered and fully OBD2 compliant (Excludes California).Cast V-Band Flange: Precision-casted upper stainless steel V-band for a factory-perfect, leak-free seal to the turbocharger.Fast Light-Off: Reaches operational efficiency within just 9 seconds of startup, satisfying factory emissions monitors.Industrial Grade Materials: Full 304 stainless steel construction ensures maximum resistance to heat and corrosion.Warranty Protected: Covered by a 5-year/50,000-mile structural warranty and a 2-year/25,000-mile catalyst core warranty.*Specifications:SKU: 11-063NConstruction: TIG-welded heavy-gauge 304 StainlessCatalyst Size: 4.5" Diameter High-Flow CorePower Capacity: Engineered for high-output setups (up to 850 HP)Compatibility: Integrates with factory O2 sensors and mounting pointsVehicle Fitment: * 2025+ BMW M340i / M340i xDrive (G20)2025+ BMW M440i / M440i xDrive (G22/G23/G26)

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Active Autowerke Catted Downpipes - F10/F12 M5/M6 S63

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:51075064

Part#: 11-093

Ships in 4 Business Days

$ 2,849.00 USD

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$ 2,849.00 USD

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The Active Autowerke Signature GESI Catted Downpipes offer the perfect balance of raw performance and street-legal refinement. Unlike "catless" alternatives that cause unpleasant fuel odors and dashboard error lights, this system utilizes EPA-registered GESI high-flow catalytic converters. These proprietary converters use precious metal loading technology to significantly reduce emissions, ensuring your BMW remains OBD2 compliant and "Check Engine Light" free. Designed as a direct bolt-on replacement for F-Chassis BMW X5M, X6M, and 550i/650i models, these downpipes feature cast upper stainless steel V-bands for a factory-perfect seal. Whether you are cruising or under wide-open throttle, the system maintains a sophisticated exhaust note while safely protecting both passengers and the environment from harmful fumes. Key Features: NO CEL Guarantee: Advanced GESI technology ensures no catalytic efficiency codes under normal operation. Refined Sound & Scent: Eliminates the "raw fuel" odor associated with track-only downpipes. 49-State Legal: EPA registered and fully OBD2 compliant (excludes California). Precision Fitment: Cast upper V-bands ensure a leak-free connection to the turbo housing. OEM Integration: Easily bolts on with no cutting, welding, or permanent vehicle modification required. Specifications: Construction: Heavy-duty 304 Stainless Steel Inlet Connection: Precision-cast V-Band flange Catalyst Size: 4.5-inch Ultra High Flow unit Efficiency: Reaches full efficiency in under 10 seconds from cold start Compliance: Fully OBD2 compliant (1996 and newer vehicles) Application Note: Requires VIN for fitment verification; not compatible with G-chassis N63B engines.

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Supersprint Section 1 Straight Pipes

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:351397

Part#: 985512

Ships on Oct 13, 2026

$ 1,260.00 USD

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$ 1,260.00 USD

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100% handcrafted in Italy. Stainless steel construction. Legendary sound!

BMW F90 M5 Black Series Lower Downpipe Set With Ceramic Black Coating...

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T#:584686

Part#: B5555.2DP2.BKT

Ships on Aug 31, 2026

$ 2,995.00 USD

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Improved power and throttle response

Catalytic Converter / Downpipe Hardware Kit

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T#:575017

Part#: R56SDOWNPIPEKT

Ships in 6 Business Days

$ 142.99 USD

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$ 142.99 USD

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Racing Dynamics Catted Downpipe

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T#:20386743

Part#: 1301055560

Ships in 6 Business Days

$ 890.00 USD

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$ 890.00 USD

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Catted downpipe with heat shield for BMW M135i/M235i/335i/435i/M2 F87 model with the 3.0 liter turbocharged N55 straight 6 motor from 2015-2018. Eliminates the largest restriction in your exhaust with a 200 cell sport cat. Large input flange with 4" mandrel bent downpipe manufactured out of 304 stainless steel, TIG welded with brushed finish. For left & right hand drive models! Features: Large 4 1/2" inlet flange, 4" tubing and straight-through design allows for maximum power and sound. Heat Shield to funnel the heat out the exhaust and lower temperature in engine compartment. Heat shield is used to protect surrounding parts, wires, and hoses against radiant heat from the downpipes, Integrated thermal insulation reduces surface temperature up to 70% Straight-through tubing section replaces the heavy and restrictive OEM catalytic converters for maximum power and sound Improves horsepower and torque significantly. Approximately 20 HP with a tune. Downpipe includes a 200 cell sport catalytic converter for a cleaner environment Direct bolt-on replacement for OEM primary catalytic converters Less thermal load on the turbocharger Reduces turbo lag Applications: BMW M135i N55 F20 2014-18 BMW M235i N55 F22 2014-18 BMW 335i N55 F30/F31/F34 2014-18 BMW 435i N55 F32 2014-18 BMW M2 N55 F87 2014-21

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Racing Dynamics Catted Downpipes W/Heat Shield - F95/F96 X5/X6M ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For model years 2022+

T#:8965600

Part#: 1301063590

Ships in 6 Business Days

$ 2,295.00 USD

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$ 2,295.00 USD

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Racing Dynamics' Gen2 Downpipes are an evolution of their line of performance downpipes. These new downpipes include improvements in the flex joint to reduce vibration and allow better alignment during installation, O2 sensor bungs for reinstallation of the OE O2 sensors, and mounting brackets to support the weight. Performance downpipes are designed reduce restrictions of the catalytic converters allowing your turbos to breathe more efficiently. This reduced restriction allows the turbos to spool up quicker and provide a more aggressive turbo sound. Features: Large 3" diameter TIG welded 304 stainless steel piping throughout for maximum power. High temperature heat shield through engine compartment to reduce heat buildup and protect engine components Direct bolt-on complete with Euro 5 200 cpsi sport catalytic converters. Straight-through design allows for maximum power and sound. Less back pressure improves turbo response and improves horsepower and torque significantly. These parts are intended for off road or track use only! This product is not for sale or use in California. Racing Dynamics has been a huge part of the European community since the early 80's. Their sway bars and strut braces are developed from pure professional experience, utilizing the expertise of skilled race engineers to develop or improve products to meet the demands of BMW drivers. The dedicated focus on performance, comfort, and strength are what make Racing Dynamics products the best on the market no matter if it's street or track.

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