Active Autowerke BMW Downpipes for BMW F83 M4 S55 3.0L

Clear BMW chassis

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!

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Active Autowerke High Flow Catted Downpipes - F8X S55

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

T#:2393422

Part#: 11-080

Ships in 2 Business Days

$ 2,849.99 USD

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$ 2,849.99 USD

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For over 30 years, Active Autowerke has been the one to turn to for high quality BMW performance products. Committed to enhancing the performance of BMWs through the highest quality products is what Active Autowerke is all about. Developed for precise fitment on the F87 M2C, F80 M3 and F82 BMW M4, the difference in performance will be noticeable the moment you leave your driveway! Features: NO CEL when using this downpipe Quicker turbo spool and response Less restrictive, more free flowing Improved low end and mid range performance as well as higher boost levels GESI EPA registered high flow and fully OBD2 compliant Casted upper stainless steel V-Band for precise fitment Withstands up to 1500F Can reach operational efficiency within 9 seconds of startup Easily bolts-on with no cutting or welding required Accepts OEM O2 sensor heat shield 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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Downpipes W Active A-flow Cats - F10/F12 M5/M6

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

T#:51110145

Part#: 11-093A

Ships in 3 Business Days

$ 2,279.00 USD

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$ 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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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 3 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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Active Autowerke BMW Downpipes for BMW F83 M4 S55 3.0L

Active Autowerke High Flow Catted Downpipes - F8X S55

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

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

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