$595.00 USD
$595.00 USD












The MMX Performance intercooler is a substantial cooling upgrade for F-Series MINIs running the Cooper S or Cooper S JCW powertrains. The factory intercooler is one of the first thermal limits a tuned B46/B48 MINI hits, once charge-air temps climb, timing pulls and power drops on every successive run. This intercooler resolves that.
The tube-and-fin stepped core delivers nearly double the core volume of the OE unit, with a 70% increase in frontal area. That extra cooling capacity translates to substantially lower charge-air temperatures both at sustained throttle and on back-to-back pulls, the kind of conditions where the OE cooler thermally saturates first.
The real-world impact is heat-soak resistance. On a stock car you preserve consistent power across multiple runs; on a tuned car you unlock the headroom to actually use the boost the tune is requesting, without timing pull masking the gains. It is the foundational piece for any meaningful F-MINI tune.
Choose the variant that matches your car at checkout, the Cooper S and Cooper S JCW each get a dedicated SKU. Chargepipes are available separately and are a strongly recommended companion when running elevated boost.
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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.