$595.00 USD
$595.00 USD






Meet the MAD BMW S58 Resonated Downpipes—engineered for your M2C, M3, and M4. These aren't just any downpipes; they're your ticket to unlocking untamed power, unparalleled performance, and that growl you've always dreamed of while significantly reducing that annoying rasp in your exhaust note.
Resonated for Refinement & Rasp Reduction Say goodbye to the annoying raspiness that often plagues aftermarket catless downpipe systems. These downpipes come resonated to deliver the ideal balance between aggressive sound and interior cabin comfort. Unleash your car's personality without waking up the entire neighborhood! The MAD Resonated Downpipes provide a harmonious exhaust note that is both refined and pleasing to the ears.
Flex Section Design:
Worried about stress and strain? Our flex section ensures an adaptive fit, reducing stress on the turbocharger and exhaust system during spirited drives.
Premium Construction:
Crafted from high-grade 304 stainless steel for ultimate durability and longevity. Resistant to corrosion and high temperatures, these downpipes are built to last.
Plug-and-Play Installation:
Straightforward bolt-on installation means you can get back on the road ASAP.
Performance Boost:
Experience improved throttle response, increased horsepower, and more efficient turbo spooling. Get ready for a transformative driving experience!
Compatibility:
Perfectly tailored for BMW M2C, M3, and M4 models equipped with the S58 engine.
Emissions Disclaimer:
This product is not legal for sale or use on pollution-controlled vehicles operated on public roads, highways, or streets. It is intended for off-road, race, or closed-course competition use only, where such modifications are permitted.
By purchasing this product, you acknowledge and agree that:
You are responsible for compliance with all applicable emissions laws and regulations.
MAD and its affiliates disclaim any liability for improper or unlawful use of this product.
Use of this part on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws.
Please check your local laws before purchase and installation.
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$595.00 USD
$595.00 USD
This product can expose you to chemicals such as lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
For a complete list of chemicals known to cause harm, visit https://www.p65warnings.ca.gov/chemicals.
Under the federal Clean Air Act (42 U.S.C. §7522(a)(3)), it is illegal to manufacture, sell, install, or use any part that defeats or alters a motor vehicle’s emission control system for use on public roads. Unless a product has received an Executive Order (EO) from the California Air Resources Board (CARB), it is not legal for use or installation on any pollution-controlled vehicle driven on public highways.
Some states have CARB-equivalent or independent emissions laws. Customers are responsible for verifying local regulations before purchasing or installing emissions-related products.
All performance, racing, or competition parts sold by this company are intended solely for off-road, closed-course, or competition use on vehicles that are never registered or used on public highways.
Kies Motorsports, LLC sells and markets these products for lawful use only. We do not condone or authorize the use of emission-control defeat devices or any modification that violates the Clean Air Act or state regulations.