BMW Downpipes for BMW G80 M3 S58 3.0L

Active Autowerke Downpipe With Gesi Cat - G80/G82/G87 - M2/M3/M4 S58 ...

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T#:5886937

Part#: 11-085

Ships in 4 Business Days

$ 2,849.99 USD

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$ 2,849.99 USD

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Active Autowerke is proud to release the advanced Active Autowerke Signature Catted Downpipes with GESI G-Sport cats for the BMW G80 M3 and G82 M4. While these cars have received rave reviews for their performance, the sound is a muffled one leaving the driver to wonder if they are really driving a BMW M-car. In order to solve this, Active Autowerke has created a full exhaust system for the G80/G82 which comprises this mid-pipe, a rear axle-back valved exhaust and a set of GESI catted downpipes. Together, this remake of the stock exhaust results in a G80/G82 with an amazing sound. You will feel like you are driving a true M-car again. This variant includes a pair of 4.5" ultra high flow GESI catalytic converters that will NOT produce a CEL. The GESi G-Sport Ultra High Output Catalytic Converter features full 304 stainless steel construction, including the substrate. GESi UHO-Series Catalytic Converters are EPA registered and compliant in 49 states and fully OBD2 compliant, perfect for use on 1996 and newer vehicles. GESi proprietary precious metal loading technology ensures greatly reduced emissions, eliminating most "Check Engine Lights". These high flow catalytic converters outperform stock converters and provide a reliable solution to the most common catalytic converter problems. FEATURES: NO CEL when using these downpipes GESI EPA registered high flow and fully OBD2 compliant The most advanced cats produced by GESI today Casted upper stainless steel V-Band for precise fitment 4.50" diameter piping allows for maximum power output Quicker turbo spool Rated for 500 to 850 hp applications per cat Withstands up to 1500 F Can reach operational efficiency within 9 seconds of startup Easily bolts-on 2013 no cutting or welding required Durable construction from TIG welded 304 stainless steel Precise fitment Ultra high flow 400 cell per square inch catalyst EPA compliant for use on OBD2 vehicles (1996 and newer) except in California 304 stainless steel substrate is furnace braised to the mantle for outstanding durability GESI proprietary precious metal loading technology ensures greatly reduced emissions Ideal for Forced Induction Applications with no loss of HP Both passengers and drivers are safe from harmful emissions and noise Covered by 5 Year / 50,000 Mile Warranty (on catalytic converter) Made in Miami, Florida

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CTS Turbo High Flow Catted Downpipes

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T#:18899144

Part#: CTSEXHDP0053CAT

Ships in 8 Business Days

$ 899.99 USD

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$ 899.99 USD

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CTS stainless steel downpipes allow for faster spool, better transient boost response, higher boost, and great sound. High-Flow CATS are compatible with factory mid-pipes. You should expect strong torque gains when paired with appropriate tuning software. CAD simulation is used to streamline the flow of exhaust gasses and ensure seamless integration with the factory and CTS exhaust components. Many hours of R&D were spent to ensure a perfect fit, smooth exhaust flow, and excellent sound. Features: Durable 304 food-grade stainless steel Laser-cut flanges Factory-like placement of O2 sensors Designed using the latest 3D scanning technology LHD/RHD fitment Exhaust flow simulated with CAD software to ensure optimal flow routing Perfect fit with factory or aftermarket mid-pipes Aggressive sound – really makes that S58 scream Software tune is required to avoid CEL! Make sure your software is compatible with high flow catted downpipes!

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Akrapovic Downpipe With Cat - G80/G82 M3/M4

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T#:3018044

Part#: DP-BM/SS/8

In Stock at Vendor

$ 4,331.99 USD

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$ 4,331.99 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. 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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Downpipe To Cat-Back Reducer - Priced Each

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T#:22427013

Part#: 006555ECS06B

In Stock

Sale - Save 40% $ 38.99

This product was last offered at the strikethrough price on
05-03-2026

$ 23.39 USD

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Sale - Save 40%

$ 38.99

This product was last offered at the strikethrough price on
05-03-2026

$ 23.39 USD

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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

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Active Autowerke BMW S58 G80 M3 G82 M4 G87 M2 Downpipes W Aflow CATs ...

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T#:39497972

Part#: 11-085A

In Stock

5% off MSRP $ 2,399.00

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

$ 2,279.00 USD

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5% off MSRP

$ 2,399.00

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

$ 2,279.00 USD

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For the owner of a flagship G-series M-car, Active Autowerke provides a "no-compromise" performance upgrade that prioritizes both power and daily-driver refinement. These downpipes feature integrated GESI G-Sport catalytic converters, which are EPA-registered and fully OBD2 compliant. Utilizing proprietary precious metal loading, these converters reach operational efficiency within just 9 seconds of startup, drastically reducing emissions and eliminating the pungent exhaust smells common with aftermarket pipes. Designed as a direct bolt-on replacement, this system preserves your car's sophisticated electronics while providing a deep, aggressive V8-like growl that the S58 engine was always meant to have. Key Features: Refined Exhaust Note: Increases the volume and depth of the exhaust tone while maintaining a drone-free cabin. Fast Catalyst Light-Off: Proprietary loading technology ensures emissions systems satisfy factory monitors quickly. Corrosion Resistance: High-grade T304 stainless steel substrate is furnace-braised to the mantle for outstanding durability. Precision Casting: Casted upper flanges provide superior strength compared to standard cut-and-weld alternatives. Warranty Protected: Covered by a 5-year/50,000-mile structural warranty and a 2-year/25,000-mile catalyst core warranty.* Specifications: System Type: Twin Catted Downpipes Weight Reduction: Significantly lighter than the heavy ceramic factory assemblies Flow Rating: Engineered for engines producing up to 850 HP Hardware: Includes lower mounting brackets and precision V-bands Manufacturing: Hand-fabricated in the USA Vehicle Fitment: * 2021+ BMW M3 Sedan (G80) / Competition / xDrive 2021+ BMW M4 Coupe (G82) / Competition / xDrive 2023+ BMW M2 (G87) *Important Note: The catalyst warranty is void if the vehicle is equipped with an "aggressive burble" tune, as excessive backfire can physically degrade the catalyst core over time.

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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

$ 3,638.00 USD

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$ 3,638.00 USD

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Valvetronic 400 Cell Catted Downpipes - BMW G87 M2, G80 M3, G82/83 M4...

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T#:52516242

Part#: G8XFF400CBR

Ships in 2 Business Days

$ 2,249.99 USD

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$ 2,249.99 USD

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The BMW G8X M2, M3, and M4 represent the next evolution of M performance, powered by the highly capable S58 twin-turbo inline-6. While factory catalysts prioritize restriction and sound suppression, our NEW EPA-compliant 400-cell high-flow catted downpipes are engineered to reduce exhaust backpressure, enhance turbo efficiency, and unlock a sharper, more aggressive exhaust character — all while maintaining emissions compliance standards.

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Active Autowerke GESI Catted Downpipes - G90 M5

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T#:51285673

Part#: 11-142

Ships on Jun 18, 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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BMW Downpipes for BMW G80 M3 S58 3.0L

Active Autowerke Downpipe With Gesi Cat - G80/G82/G87 - M2/M3/M4 S58 ...

CTS Turbo High Flow Catted Downpipes

Akrapovic Downpipe With Cat - G80/G82 M3/M4

Downpipe To Cat-Back Reducer - Priced Each

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

Active Autowerke BMW S58 G80 M3 G82 M4 G87 M2 Downpipes W Aflow CATs ...

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

Valvetronic 400 Cell Catted Downpipes - BMW G87 M2, G80 M3, G82/83 M4...

Active Autowerke GESI Catted Downpipes - G90 M5

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