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Active Autowerkes

Active Autowerke Downpipes w/ GESI G-Sport Cat BMW M2 | M3 | M4 G80 G82 G87

Active Autowerke Downpipes w/ GESI G-Sport Cat BMW M2 | M3 | M4 G80 G82 G87

Regular price $2,849.05 USD
Regular price $2,999.00 USD Sale price $2,849.05 USD
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This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.

Purchasing this product requires you to sign our Vehicle Compliance Waiver here.

The Active Autowerke G80/G82 S58 Signature down pipe utilizes 3 inch diameter stainless steel piping in order to provide more power, quicker spool, and extreme durability. We've incorporated stainless flex joints and then down to 70mm to meet the OEM exhaust system. We never drop the diameter to smaller than the stock diameter of 70mm.

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.


  • 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
  • BMW M3 | M4 2021+
  • BMW M2 G87

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