Those who race in any spec series are doing so for one major reason: reduced costs to campaign a race car. Spec Mazda MX-5 Miata racing is one of the most inexpensive series out there and is based on the reliable NC chassis in production from 2006 to 2015. Mazda Motorsports identified a need in the spec-racing market and partnered with MAHLE Motorsport to develop a forged piston, that will boost the reliability game and keep racers from an unexpected DNF on the race track.
MAHLE is a worldwide leader in developing racing pistons. Its catalog ranges from OEM-spec to wild, uncorked products for race cars measured in the thousands of horsepower. MAHLE worked closely with Mazda Motorsports to develop a piston to outperform everything else but is still able to meet the national rules and spec parts criteria for the 2006-2015 Mazda MX-5 Miata race cars.
The piston is a MAHLE proprietary design, which uses special materials and coatings to give racers the edge they need in a very closely matched competition. The new Spec Mazda MX-5 Miata piston is forged from 4032 alloy, meaning it’s far stronger and can be pushed harder than a cast piston. The MAHLE piston also features a GRAFAL anti-friction skirt coating to reduce drag and any wearing on the cylinder bore to maintain compression over time. A phosphate dry-film lubricant has been added to pin bores to prevent galling as well as the ring grooves preventing micro-welding. The forged piston also features a machined crown for the very tight tolerances of motorsports applications, all co-developed and approved by Mazda Motorsports for competition.
“We were able to build a piston with MAHLE that we feel will have unmatched performance and durability and meet our pillars for the Miata MX-5 spec race program to be affordable, reliable, tech-able, and fun-to-drive,” states Josh Smith, Mazda Motorsports technical specialist, Motorsports, Mazda North American Operations.
The new MAHLE Motorsport piston for Spec Mazda MX-5 Miata is approved for use in all existing spec events in SCCA and NASA (ST5). The piston features specific markings that allow race tech inspectors to identify this competition-approved part quickly and easily. With more spec events planned for 2020 in American Endurance Racing, ChampCar, and World Racing League, this piston couldn’t have been released at a better time.