$595.00 USD
$595.00 USD










The MMX Performance high-flow chargepipe kit is the definitive boost pipe upgrade for S55-powered F-chassis M-Cars. The factory plastic chargepipes are the most common boost-related failure on the M2 Competition, M3 F80 and M4 F82/F83, under increased boost pressure they crack and split, dumping power and triggering codes. This kit eliminates that failure point.
The aluminum pipework is smooth-bore and mandrel-bent from a single piece, with a constant internal diameter throughout. That replaces the flattened, geometry-compromised OE pipes, both improving airflow and ensuring the pipes hold their shape under boost or vacuum, which is the other failure mode of the OEM units.
The result, on the road or at the strip, is more consistent boost delivery, sharper throttle response, and the reliability headroom to run elevated power outputs without nursing the boost pipework. The constant internal diameter is what allows tuned S55s to deliver clean, repeatable boost numbers.
Each pipe is finished in a durable crinkle-black with laser-etched MMX logo detailing for a clean, OE-quality engine bay appearance. Installation is a straightforward direct-replacement job (no cutting, no permanent modification) and 1/8" pre-tapped bungs on each pipe make adding methanol or water injection later a bolt-on affair.
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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.