$595.00 USD
$595.00 USD








Take your 2024+ BMW X5M or X6M Competition to the next level with the MAD Catless Primary Downpipes for the S68 engine. Engineered for drivers who want uncompromised performance and an aggressive exhaust note, these downpipes free up horsepower and unlock the raw potential of your M.
The restrictive factory downpipes limit your S68’s true capability. Swapping to MAD catless downpipes improves exhaust flow, allowing the turbos to spool quicker and respond faster. The difference is immediate sharper throttle response, improved midrange punch, and an overall more exciting driving experience.
Along with performance gains, the MAD downpipes transform your exhaust tone. Expect a deeper, more powerful sound without sacrificing refinement. Lower under-hood temperatures also help preserve long-term turbo health, making this upgrade about both performance and longevity.
Each downpipe is crafted from thick 2.0mm 304 stainless steel, chosen for durability and resistance to high heat. Our TIG welding and back-purging process ensures maximum strength and smooth interior surfaces for uninterrupted airflow. Designed as a direct bolt-on upgrade, installation is straightforward with OEM-style brackets and flanges.
Unlike generic alternatives, MAD downpipes are designed specifically for the S68 platform with fitment tested on the X5M and X6M. We stand behind our work with a limited lifetime warranty, giving you peace of mind while you enjoy the performance benefits.
Noticeable horsepower and torque gains
Faster turbo spool and sharper throttle feel
Deeper, more aggressive exhaust tone
Lower under-hood heat to extend turbo life
Heavy-duty 304 stainless steel construction (2.0mm wall)
TIG welded and back-purged for durability and smooth flow
Bolt-on installation with OEM-style hardware
Limited lifetime warranty
2024+ BMW F95 X5M LCI Competition (S68 engine)
2024+ BMW F96 X6M LCI Competition (S68 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.