Find Parts That Fit Your Vehicle

BMW Downpipes

When BMW began to offer more and more forced induction vehicles, some enthusiasts were upset and others were excited about the big power potential. While we love older, naturally aspirated BMWs, we LOVE forced induction BMWs. Upgrading your downpipe (or downpipes) is one of the easiest ways to reduce restriction and add more power to your BMW. We offer several brands, including our own designs, of downpipes for your BMW!
Sort By:

Genuine BMW Catalytic Converter / Downpipe Installation Kit - B58 3.0...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:27838480
Part#: 18328612537KT4
In Stock
$ 110.99 USD
Free Shipping on orders $49 and up
Prevent engine issues and error codes caused by exhaust leaks with the correct installation of components using appropriate gaskets and hardware.
Exhaust Adapter With Flared End, 70mm Diameter Pipe
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Racing Dynamics - Corporate Logo
T#:640224
Part#: 130 10 99 010
Ships in 5 Business Days
$ 37.99 USD
Free Shipping on orders $49 and up
Adapter Sleeve (Olive Connection)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Milltek Sport - Corporate Logo
T#:597158
Part#: F5137
In Stock
Sale - Save 11% $ 39.99

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

$ 35.42 USD
Free Shipping on orders $49 and up
Sale - Save 11%
$ 39.99

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

$ 35.42 USD
Free Shipping on orders $49 and up

Downpipe To Cat-Back Reducer - Priced Each
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:22427013
Part#: 006555ECS06B
In Stock
Sale - Save 25% $ 39.99

This product was last offered at the strikethrough price on
06-14-2026

$ 29.99 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 39.99

This product was last offered at the strikethrough price on
06-14-2026

$ 29.99 USD
Free Shipping on orders $49 and up

Upgrade your exhaust system with the Downpipe To Cat-Back Reducer.

Engineered for optimal performance and durability, this reducer allows for seamless connection between your downpipe and cat-back exhaust system. Its high-quality construction ensures a tight seal, reducing exhaust leaks and enhancing overall exhaust flow. With easy installation and compatibility with various exhaust systems, this reducer is a must-have for any performance enthusiast.

  • Allows for seamless connection between downpipe and cat-back exhaust
  • High-quality construction for durability
  • Tight seal reduces exhaust leaks
  • Enhances overall exhaust flow
  • Easy installation and compatibility with various exhaust systems
Show More Show Less

Akrapovic Downpipe With Cat - G80/G82 M3/M4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Akrapovic - Corporate Logo
T#:3018044
Part#: DP-BM/SS/8
In Stock at Vendor
$ 4,331.99 USD
Free Shipping on orders $49 and up
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. It delivers a pure racing sound, full of emotion and adrenalin-inducing enjoyment, and great feedback at high revs, all without unwanted drone.
Show More Show Less
Wagner Downpipe With Sport Cat - N55 - F30 335i thru 6/2013
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Wagner Tuning - Corporate Logo
T#:214369
Part#: 500001010
Ships in 1 Business Day
Sale - Save 10% $ 910.00

This product was last offered at the strikethrough price on
07-06-2026

$ 819.00 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 910.00

This product was last offered at the strikethrough price on
07-06-2026

$ 819.00 USD
Free Shipping on orders $49 and up

Wagner downpipes for F30 feature larger piping and catalytic converter that are freer-flowing than the original cats for better flow and less backpressure. By removing exhaust restrictions the turbos can spool up faster which makes more boost sooner. With additional tuning, more power is available. There are downpipes that delete the primary cats and can leave the exhaust with a dirty and awful smell. These Wagner downpipes are built with a sport cat to keep the exhaust cleaner.Special software, or stand-alone engine management, will be required to keep emissions fault codes and check engine lights from appearing.

Features:

  • 200cpi Catalytic Converter
  • 100% perfect fit - CAD designed.
  • less thermal load on the turbocharger
  • more power by reducing back pressure
  • significantly more torque
  • connection diameter 105mm
  • Made from 1.4301 (SS304) Stainless Steel


     
  •  

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.


This item fits the following BMWs with the N55 engine:
2012-6/2013 F30 BMW 335i 335i xDrive - Sedan
Left Hand Drive ONLY

Show More Show Less

High Flow 200 Cell Catted Downpipe - F Series B58
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Wagner Tuning - Corporate Logo
T#:587591
Part#: 500001027
Ships in 1 Business Day
Sale - Save 10% $ 1,090.00

This product was last offered at the strikethrough price on
07-06-2026

$ 981.00 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 1,090.00

This product was last offered at the strikethrough price on
07-06-2026

$ 981.00 USD
Free Shipping on orders $49 and up
A higher flowing catalytic substrate for dramatically improved throttle response and torque.
Genuine BMW Exhaust Nut - Exhaust Manifold to Cylinder Head - F01 F02...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:36828
Part#: 11627576992
Ships in 2 Business Days
3% off MSRP $ 6.42

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

$ 6.20 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 6.42

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

$ 6.20 USD
Free Shipping on orders $49 and up


Genuine BMW Hex Nut Wiht Flange -
This item fits the following BMW Chassis:
E71,F01,F02,F06,F10,F12,F13,F15,F16

Fits BMW Engines including:
N63,N63N

Show More Show Less

VRSF Replacement Chargepipe Methanol/Water Injection Bung Plug for 07...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
VRSF - Corporate Logo
T#:35154903
Part#: 504010
In Stock
$ 8.99 USD
Free Shipping on orders $49 and up
$ 8.99 USD
Free Shipping on orders $49 and up

This plug is a replacement for the following models: 10901020A, 10901020B, 10901020C, 10901020D, 10301050, 10101020 and any other VRSF chargepipe that utilizes a water injection bung. VRSF Replacement Chargepipe Methanol/Water Injection Bung Plug for 07-16 BMW N54/ N55/ N20/ N26/ S55/ B58 is a crucial component for maintaining peak performance in turbocharged BMW engines. Designed to prevent boost leaks and ensure a secure seal for methanol and water injection ports, this bung plug is crafted from premium materials for long-lasting reliability. Compatible with VRSF chargepipes, it is an ideal solution for BMW enthusiasts seeking precision and durability in their high-performance setups. Available through Turner Motorsport, this part ensures seamless integration with your BMW's engine components.

Benefits: Ensures a secure seal for methanol and water injection ports to prevent boost leaks Built from high-quality materials for superior strength and longevity Compatible with VRSF chargepipes on 07-16 BMW N54, N55, N20, N26, S55, and B58 engines Easy installation minimizes downtime and simplifies engine upgrades Maintains optimal turbo efficiency and performance in high-pressure systems The VRSF Replacement Chargepipe Methanol/Water Injection Bung Plug for 07-16 BMW N54/ N55/ N20/ N26/ S55/ B58 is the ultimate choice for BMW owners committed to maximizing reliability and performance.

Show More Show Less

Supersprint Performance Exhaust System - F97 X3 M, F98 X4 M
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Supersprint - Corporate Logo
T#:588288
Part#: 5260X2
Ships in 3 Business Days
Starting at $ 5,023.99 USD
Free Shipping on orders $49 and up
Starting at $ 5,023.99 USD
Free Shipping on orders $49 and up
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!
Show More Show Less
Adapter Pipe
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Milltek Sport - Corporate Logo
T#:597146
Part#: F5136
Ships in 3 Business Days
Sale - Save 12% $ 38.99

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

$ 34.33 USD
Free Shipping on orders $49 and up
Sale - Save 12%
$ 38.99

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

$ 34.33 USD
Free Shipping on orders $49 and up
Akrapovic Downpipe With Cat - G20/G21/G22/G23 M340i M440i
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Akrapovic - Corporate Logo
T#:2706135
Part#: DP-TY/SS/1
In Stock at Vendor
$ 5,565.99 USD
Free Shipping on orders $49 and up
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.
Show More Show Less


Milltek Large Bore Downpipe And Hi-Flow Sports Car - M3/M4/M2 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Milltek Sport - Corporate Logo
T#:39059239
Part#: SSXBM1333
Ships in 3 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
Free Shipping on orders $49 and up
Sale - Save 10%
$ 3,638.00

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

$ 3,274.20 USD
Free Shipping on orders $49 and up
XForce - Downpipe Kit - F22 M235i
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
XForce - Corporate Logo
T#:50934838
Part#: ESBM118KITB
Ships in 1 Business Day
New Item
Sale - Save 10% $ 585.00

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

$ 526.50 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 585.00

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

$ 526.50 USD
Free Shipping on orders $49 and up
Provides a cleaner, more efficient exit for exhaust gases, reducing under-hood heat and improving overall engine health.
Supersprint Performance Downpipes W/ High Flow Catalytic Converters -...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Supersprint - Corporate Logo
T#:37892129
Part#: 529241-529221KT
Ships on Oct 7, 2026
$ 6,936.00 USD
Free Shipping on orders $49 and up
Factory downpipes are designed with longevity and efficiency in mind, not performance. As a result, factory downpipes severely restrict exhaust flow and therefore have adverse effects on horsepower. Supersprints Performance Downpipes with High Flow Cats are designed with power in mind, allowing exhaust gases to flow smoother and without obstruction for greater power potential!
Show More Show Less

Evolution Racewerks Sport Series High Flow Catted Downpipes - Brushed...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Evolution Racewerks - Corporate Logo
T#:6061577
Part#: BM-EXH026SCAT
Ships in 8 Business Days
$ 2,395.00 USD
Free Shipping on orders $49 and up
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.
Show More Show Less

Evolution Raceworks Sports Series 4" High Flow Catted Downpipe - B46 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Evolution Racewerks - Corporate Logo
T#:29267518
Part#: BM-EXH019CAT
Ships in 8 Business Days
$ 895.00 USD
Free Shipping on orders $49 and up

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

Show More Show Less
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
Active Autowerke - Corporate Logo
T#:22822600
Part#: 11-041F
Ships in 10 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
Free Shipping on orders $49 and up
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
Free Shipping on orders $49 and up
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.
Show More Show Less

Evolution Racewerks Sport Series High Flow Catted Downpipes - Thermal...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Evolution Racewerks - Corporate Logo
T#:6061579
Part#: BM-EXH026TBCAT
Ships in 8 Business Days
$ 2,595.00 USD
Free Shipping on orders $49 and up
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.
Show More Show Less
Evolution Racewerks Sport Series High Flow Catted Downpipes - Polishe...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Evolution Racewerks - Corporate Logo
T#:6061578
Part#: BM-EXH026PCAT
Ships in 8 Business Days
$ 2,495.00 USD
Free Shipping on orders $49 and up
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.
Show More Show Less

Evolution Racewerks Sports Series Metallic High Flow Catted Downpipe ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Evolution Racewerks - Corporate Logo
T#:44529448
Part#: TO-EXH001CAT
Ships in 8 Business Days
Starting at $ 945.00 USD
Free Shipping on orders $49 and up
Starting at $ 945.00 USD
Free Shipping on orders $49 and up
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.
Show More Show Less

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+
Racing Dynamics - Corporate Logo
T#:8965600
Part#: 1301063590
Ships in 5 Business Days
$ 2,295.00 USD
Free Shipping on orders $49 and up
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.
Show More Show Less
Racing Dynamics Catted Downpipe
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Racing Dynamics - Corporate Logo
T#:20386743
Part#: 1301055560
Ships in 5 Business Days
$ 890.00 USD
Free Shipping on orders $49 and up
$ 890.00 USD
Free Shipping on orders $49 and up
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
Show More Show Less
Catalytic Converter Installation Kit - B58 3.0L
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:27238750
Part#: 18328612537KT2
In Stock
Sale - Save 1% $ 103.99

This product was last offered at the strikethrough price on
03-10-2026

$ 102.45 USD
Free Shipping on orders $49 and up
Sale - Save 1%
$ 103.99

This product was last offered at the strikethrough price on
03-10-2026

$ 102.45 USD
Free Shipping on orders $49 and up
Prevent engine issues and error codes caused by exhaust leaks with the correct installation of components using appropriate gaskets and hardware.


AFe Twisted Steel Downpipe With Sport Cat
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
AFE - Corporate Logo
T#:6843930
Part#: 48-36318-1HC
Back Ordered
Sale - Save 5% $ 1,209.00

This product was last offered at the strikethrough price on
06-29-2026

$ 1,148.55 USD
Free Shipping on orders $49 and up
Sale - Save 5%
$ 1,209.00

This product was last offered at the strikethrough price on
06-29-2026

$ 1,148.55 USD
Free Shipping on orders $49 and up