$595.00 USD
$595.00 USD










Upgrade your BMW S55 engine with the high-performance MAD BMW S55 Catted Downpipes. Say goodbye to restrictive stock catalytic converters and unlock maximum airflow, power, and an exhilarating exhaust note. Designed for M2C, M3, and M4 models, our downpipes offer a significant boost in performance.
By replacing your factory downpipes with the MAD S55 catted downpipes, you'll experience faster turbo spooling and a substantial increase in power. Expect up to 30HP gains on a tuned BMW S55 with stock turbos, and even more on vehicles equipped with upgraded turbos. Additionally, the improved exhaust flow will enhance the overall sound of your car, giving it a more aggressive and sporty tone.
Crafted with precision, our downpipes feature 200CEL Euro 5 cats, ensuring compliance with emission regulations while optimizing performance. The smooth bends in the design promote maximum airflow without any drone, delivering an exhilarating driving experience.
One of the standout features of our downpipes is the flex section. This flexible portion helps reduce stress on the pipes caused by engine movement and thermal expansion. By minimizing strain, it ensures the longevity and reliability of the exhaust system.
Rest assured, our MAD BMW S55 Catted Downpipes come with a lifetime warranty against defects and fitment issues. We also offer a convenient 90-day return period for your peace of mind. Place your order today, and your upgrade will be shipped within 1-2 business days.
Upgrade your BMW S55 engine to the next level with the MAD S55 Catted Downpipes. Experience unparalleled performance, enhanced sound, and unleash the full potential of your vehicle. Transform your driving experience with our spot-on fitment, exceptional quality, and customer satisfaction guarantee.
Fitment:
2018+ BMW M2 Competition
2014+ BMW M3
2015+ BMW M4
SKU:
MAD-2050
SKU:
MAD-2050
Disclaimer:
For race use only. This product is not certified for use on public roads and may not comply with local emissions regulations. Additionally, it does not prevent the illumination of the Check Engine Light (CEL). Please consult your local laws and regulations before 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.