Upgrade your B58-powered BMW with the MAD Cold Air Intake and experience sharper response, improved airflow efficiency, and a more aggressive driving sound every time you hit the throttle.
$595.00 USD
$595.00 USD










Unlock the full potential of your BMW’s B58 turbocharged engine with the MAD High Flow Cold Air Intake System. Engineered for both performance enthusiasts and daily drivers, this intake system delivers increased airflow, improved efficiency, enhanced throttle response, and an aggressive turbo intake sound that transforms your driving experience.
Designed specifically for BMW B58-powered 540i, 740i, and 840i models, this system optimizes the air path to reduce restriction and maximize performance gains while maintaining reliability and durability.
Optimized high-flow intake design for smoother, less restricted airflow
Noticeable improvement in throttle response and turbo spool
Enhanced induction sound with a deeper, sportier intake tone
Custom-fit heat shield to protect against engine bay heat
Lightweight, high-grade aluminum intake pipe
Durable silicone couplers for secure, long-lasting performance
Direct bolt-on installation with included hardware
No complex modifications required
High-flow air filter
Aluminum intake pipe
Custom heat shield
Mounting hardware
BMW 5 Series G30 540i with B58 engine
BMW 7 Series G11 LCI 740i with B58 engine
BMW 8 Series G14 840i with B58 engine
BMW 8 Series G15 840i with B58 engine
BMW 8 Series G16 840i with B58 engine
Upgrade your B58-powered BMW with the MAD Cold Air Intake and experience sharper response, improved airflow efficiency, and a more aggressive driving sound every time you hit the throttle.
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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.