Introducing the Enhanced Active Autowerke BMW M3/M4 S58 Catted Downpipes

Unveiling the remarkable Active Autowerke Signature Catted Downpipes featuring GESI G-Sport cats exclusively designed for the BMW G80 M3, G82 M4, and G87 M2. While these iconic vehicles have earned accolades for their remarkable performance, the exhaust note sometimes falls short, leaving drivers questioning the essence of their BMW M-car experience. To revolutionize this, Active Autowerke presents a comprehensive exhaust solution for the G80/G82/G87, encompassing this mid-pipe, a rear axle-back valved exhaust, and a set of GESI catted downpipes. This amalgamation reimagines the stock exhaust, resulting in an extraordinary auditory symphony that truly reflects the heart of a genuine M-car.

BMW has embarked on an evolution with its S58 engine, transitioning from the valvetronic single turbo version for the F-Chassis models since 2016, extending into the G-Chassis models and culminating in the twin-turbo variant for the M-series vehicles. The Active Autowerke S58 downpipes for the G80 M3, G82 M4, and G87 M2 play a pivotal role in unleashing latent potential restrained by the OEM downpipes.

Turbochargers thrive on the expulsion of exhaust gases generated during combustion. The swifter this evacuation, the more potent the performance. Regrettably, the factory downpipe in the S58 proves somewhat constraining, leading to sluggish exhaust gas flow and turbo spool. Pioneering the Active Autowerke G8X M3/M4/M2 collection, we proudly introduce our catted signature downpipe.

The Active Autowerke G80/G82/G87 S58 Signature downpipe employs 3-inch diameter stainless steel piping to amplify power, expedite spooling, and ensure robust longevity. We've integrated stainless flex joints that taper down to 70mm to align with the OEM exhaust system, maintaining the stock diameter of 70mm without any reduction.

This variant showcases a pair of 4.5" ultra-high-flow GESI catalytic converters engineered to eliminate the possibility of a Check Engine Light (CEL).

The GESi G-Sport Ultra High Output Catalytic Converter boasts complete 304 stainless steel construction, inclusive of the substrate. EPA registered and compliant in 49 states, the GESi UHO-Series Catalytic Converters are fully OBD2 compliant, rendering them suitable for 1996 and newer vehicles. Proprietary precious metal loading technology from GESi ensures a substantial reduction in emissions, minimizing the occurrence of "Check Engine Lights." These high-flow catalytic converters surpass stock counterparts, providing a reliable antidote to common catalytic converter issues.

Engineered to accommodate engines generating between 500 and 850 horsepower, the GESi UHO-Series Catalytic Converters deliver exceptional flow capacity. The diminished back pressure resulting from this high-flow catalytic converter empowers your engine with peak horsepower while curbing detrimental emissions. A definitive farewell to Check Engine Lights and failed emissions tests!

Please be aware: These catalytic converters do not comply with California regulations for use on registered vehicles, per California Vehicle Code Section 27156 and 38391.

NOTE: Federal law prohibits tampering with emissions control devices. However, Mobile Source Enforcement Memorandum 1A permits aftermarket parts for the repair or replacement of emissions control systems, provided emissions are not adversely affected. The GESI catalytic converter meets or surpasses EPA standards, not CARB.

Key Features:

  • No CEL (Check Engine Light) for optimal catalytic efficiency
  • GESI EPA registered high flow and fully OBD2 compliant
  • Cutting-edge cats by GESI, setting new industry benchmarks
  • Precision-fit casted upper stainless steel V-Band
  • 4.50" diameter piping for peak power output
  • Enhanced turbo spooling
  • Suitable for 500 to 850 hp applications per cat
  • Withstands up to 1500°F
  • Achieves operational efficiency within 9 seconds of startup
  • Effortless bolt-on installation, no cutting or welding required
  • Constructed from robust TIG welded 304 stainless steel
  • Uncompromising fitment
  • Ultra high-flow 400 cell per square inch catalyst
  • EPA compliant for OBD2 vehicles (1996 and newer), excluding California
  • 304 stainless steel substrate furnace-brazed for unparalleled durability
  • GESI's proprietary precious metal loading technology ensures emissions reduction
  • Ideal for Forced Induction Applications, delivering uninhibited HP
  • Ensures both passengers and drivers are shielded from harmful emissions and noise
  • Covered by a 5-year/50,000-mile Warranty (shell and tube ends), and a 2-year/25,000-mile Warranty on the Catalytic core
  • Crafted in Miami, Florida

Active Autowerke G8X S58 Signature Downpipes Benefits:

  • Amplifies turbo impeller wheel speed by reducing exhaust back pressure
  • Accelerates turbo spooling, yielding increased horsepower and torque
  • Balances reduced back pressure with daily drive-ability, ensuring hassle-free use
  • Crafted with care, utilizing a 3-inch diameter pipe with minimal bends
  • Large volume facilitates rapid turbo spool-up by eliminating back pressure
  • Composed entirely of robust 304 stainless steel with a 1.5MM wall thickness
  • Confidently designed for trouble-free installation and extended lifespan
  • Puts the joy back in driving with swift, high-performance responsiveness
  • Specifically designed for S58 vehicles: G80 M3, G82 M4, and G87 M2
Elevate your BMW M-car experience with Active Autowerke's superior S58 Catted Downpipes. Delivering enhanced performance and an unrivaled auditory symphony, these downpipes reflect the pinnacle of engineering and craftsmanship. Say goodbye to the muted tones and hello to a resounding declaration of power. Discover the art of driving anew with Active Autowerke.

*Please verify local regulations and emission requirements before purchase.

For any inquiries or additional information, don't hesitate to reach out. We're here to assist you in unlocking the full potential of your BMW M2, M3, or M4