Stainless Steel Catless Downpipes - 2018+ BMW X3M / X4M
Stainless Steel Catless Downpipes - 2018+ BMW X3M / X4M
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Power starts with a stronger foundation — and KAOS downpipes are built to deliver it. Our 304 stainless steel downpipes for the X3M/X4M are hand-welded to reduce back pressure, improve turbo spool, and unleash hidden performance gains. Designed to sharpen throttle response and produce a throatier, more aggressive exhaust tone, these high-flow downpipes transform the way the X3M/X4M drives and sounds. Strength you can feel, sound you can't ignore. Built by KAOS. Made to Embrace the Madness.
The Majority of our products are in stock. Once your order is placed, all products are shipped via standard ground service, which typically takes 5–7 business days for delivery.
In the event that we currently do not have stock, please allow up to 2 weeks for production.
Free shipping is included on all orders within the continental United States.
Due to the custom nature of our products, all sales are final. We do not accept returns or exchanges unless the item arrives damaged or defective. If there’s an issue with your order, please contact us immediately so we can make it right.
All KAOS products are intended for off-road or track use only. They are not certified for street use and may not comply with local, state, or federal emissions or noise regulations. It is the customer’s responsibility to ensure compliance with applicable laws before installing or using our products.
By purchasing from KAOS, you acknowledge that these parts may alter your vehicle's emissions, sound level, and performance characteristics. Use at your own risk.
The Majority of our products are in stock. Once your order is placed, all products are shipped via standard ground service, which typically takes 5–7 business days for delivery.
In the event that we currently do not have stock, please allow up to 2 weeks for production.
Free shipping is included on all orders within the continental United States.
Due to the custom nature of our products, all sales are final. We do not accept returns or exchanges unless the item arrives damaged or defective. If there’s an issue with your order, please contact us immediately so we can make it right.
All KAOS products are intended for off-road or track use only. They are not certified for street use and may not comply with local, state, or federal emissions or noise regulations. It is the customer’s responsibility to ensure compliance with applicable laws before installing or using our products.
By purchasing from KAOS, you acknowledge that these parts may alter your vehicle's emissions, sound level, and performance characteristics. Use at your own risk.
Questions about an exhaust?
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