$595.00 USD
$595.00 USD












The MMX Performance BMW B58 Air Intake Kit is the most sophisticated and highest-flowing cold air intake available for B58-powered F2X and F3X chassis BMWs. Built around a dual-entry, high-flow cotton gauze filter and a precision aluminum bell-mouth, the kit removes the inherent restrictions of the factory airbox and unlocks the airflow needed to support tuned and high-output B58 engines while delivering an addictive induction soundtrack the first time you accelerate hard.
At the heart of the system is a dual-entry cotton gauze filter mounted to a smooth aluminum bell-mouth designed to maximize laminar flow into the turbo. The included heat shield retains the factory cold-air feed while isolating the filter from heat generated by the turbo and exhaust manifold, ensuring intake air temperatures stay low for consistent power delivery. Billet aluminum support fixings and real carbon fiber support rods give the heat shield a clean, finished appearance in the engine bay.
To minimize NVH, MMX integrates rubber-isolated billet mounts that allow the assembly to move with engine rock instead of transmitting noise and vibration into the cabin. Stainless steel hose clamps and complete fitting hardware are included, and the proprietary anodized finish is engineered for long-term durability under engine bay heat. Installation takes minutes, requires no cutting, and is fully reversible using factory mounting points.
Upgrade the most restrictive part of the B58 induction system, support increased boost reliably, and add a genuine performance soundtrack to your daily driver, all in one of the most cost-effective bolt-on upgrades for the platform.
Product Details
What's Included
Vehicle Applications
Related Products
Notes
Thanks for subscribing!
This email has been registered!
$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.