Product Details
About this part
MAD S58 200 Cell Race Catted Downpipes
Designed for the BMW F97 X3M and F98 X4M, MAD S58 200 Cell Race Catted Downpipes improve exhaust flow while delivering a deeper, more aggressive exhaust note.
Increased Flow for Performance-Focused Builds
Constructed from high-quality 304 stainless steel, these downpipes are built to withstand extreme exhaust temperatures and demanding driving conditions. Smooth mandrel-bent piping and 200-cell high-flow catalytic converters reduce restriction, supporting improved horsepower, torque, and throttle response.
The freer-flowing design can provide gains of up to 30 horsepower on stock turbochargers, with additional potential on upgraded turbo setups. It also sharpens the character of the S58 exhaust without introducing excessive drone.
MAD S58 downpipes bolt directly to the factory exhaust system without cutting or welding. They are also compatible with most aftermarket exhaust systems, giving owners flexibility when planning future exhaust upgrades.
These 200-cell race catted downpipes do not include a check engine light guarantee.
Features200-cell high-flow catalytic convertersHigh-quality 304 stainless steel constructionCompatible with right-hand-drive and left-hand-drive vehiclesSmooth bends for maximum airflow without excessive droneUp to 30 horsepower increase on stock turbochargersFlex sections for added durabilitySpot-on bolt-on fitment with no cutting or weldingLifetime warranty against manufacturing defects and fitment issues
For S58 owners seeking greater exhaust flow, a stronger exhaust note, and performance-focused 200-cell catalysts, MAD Race Catted Downpipes provide a direct-fit solution for the X3M and X4M platform.
Race Use Only
This product is not legal for sale or use on pollution-controlled vehicles operated on public roads, highways, or streets. It is intended solely for off-road, race, or closed-course competition use where permitted.
By purchasing this product, you acknowledge that you are responsible for compliance with all applicable emissions laws and regulations. MAD and its affiliates disclaim liability for improper or unlawful use. Use on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws.
Please check all applicable laws before purchase and installation.
FITMENT2020+ BMW X3M F972020+ BMW X3M Competition F972020+ BMW X4M F982020+ BMW X4M Competition F98
Fitment
Not sure it fits? Contact us with your car's year, model and VIN and we'll help you confirm before you order.
If a part doesn't fit as expected, contact us and we'll work with you to resolve it.
Majority of products have a fitment section in the product description or within the title.
Returns
- Unused, uninstalled parts can be returned or exchanged within 30 days of the order date.
- To start a return: Contact us first, don't use Return to Sender.
- Returns can have up to a 20% restocking fee.
- Built-to-order and special-order items can't be returned or cancelled once production begins.
Shipping
- Orders are processed 7 days a week to ensure your product ships as quickly as possible.
- Inspect parts within 10 days of delivery, and reach out regarding any damage or missing pieces.
See our Tariff Policy
Warranty
- All parts retain the manufacturer's warranty.
- Warranty claims are subject to the manufacturer's approval.