In road-going specification, the Cayman GT4 weighs in at 1,340 kilograms (2,954 pounds). Its Clubsport track-only counterpart adopts a stripped-out interior cabin and other weight-savings measures to shave off 40 kg (88 lbs). Now, Manthey-Racing has managed to cut fat by a further 40 kg (88 lbs) thanks to lightweight doors and hood made from carbon fiber. In addition, the weight loss has been achieved by installing a polycarbonate windscreen and a lighter battery.

Besides putting the Cayman GT4 Clubsport on a strict weight watchers diet, Manthey-Racing has developed a two-way adjustable race-spec suspension kit featuring linear bearings. Moreover, there’s an adjustable sway bar available which MR says it has improved the race car’s driving dynamics. Compared to the standard model, the upgraded variant comes with a bigger rear wing incorporating extended brackets.

With the upgrade kit in place, the Cayman GT4 Clubsport becomes an SRO-homologized GT4 race car, so it can compete in a wide variety of races in the GT4 category. It’s eligible to participate in the Pirelli World Challenge GTS as well as in IMSA’s Continental Tire Sports Car Challenge GS class.

Porsche Motorsport North America is exclusively in charge of selling the upgrade kit which makes the Cayman GT4 Clubsport an even more hardcore race car.

As for the road-going Cayman GT4, it’s bound to receive a facelift and purists will be happy to hear that it will continue to be naturally aspirated, unlike the 718 Cayman which has made the switch to a turbocharged engine.

Source: Porsche

Gallery: Porsche Cayman GT4 Clubsport by Manthey-Racing

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Atlanta. After the successful Porsche Cayman GT4 Clubsport launch, Manthey-Racing is presenting the Porsche GT4 Clubsport MR at the Total 24 Hours of Spa. The vehicle, based on a Porsche Cayman GT4 Clubsport racecar has been fitted with a comprehensive upgrade kit developed by Manthey-Racing. With the upgrade, the vehicle qualifies as an SRO-homologized GT4 racing car, thereby allowing it to participate in national and international races in the GT4 category.

GT4 race series are gaining in popularity internationally. They provide for high quality, nail biting competition while simultaneously offering an attractive price-performance ratio.

The technical highlights of the upgrade package include lightweight elements such as carbon fiber doors, carbon fiber front bonnet, a polycarbonate windscreen and an optional lightweight battery, which reduces the vehicle weight by around 40kg (88 pounds). The two-way adjustable race suspension kit with linear bearings and an adjustable sway bar with blade adjustment further improves driving dynamics and adjustability. Performance optimization is rounded off with a rear wing larger than that of the basic vehicle, combined with extended wing brackets.

In the North American market, the Porsche GT4 Clubsport MR and Porsche Cayman GT4 Clubsport upgrade kit will be distributed exclusively by Porsche Motorsport North America. The car will be eligible for Pirelli World Challenge GTS class competition and in IMSA’s Continental Tire Sports Car Challenge GS class.

Jens Walther, president/CEO, Porsche Motorsport North America.

“We welcome the updated Porsche Cayman GT4 Clubsport package into our offerings for motorsport customers in North America. Customer racing is the structure on which all sports car racing is built, and as the GT3 and ACO classes become more manufacturer-oriented, the GT4 category provides a more attainable entry point to compete in sports car racing.”