Porsche has unveiled its latest racing-only sports car at the 2015 Los Angeles Auto Show – the Porsche Cayman GT4 Clubsport. This not-for-the-road mid-engine sports car is derived from the street-legal Cayman GT4 sports car, both sharing the same engine – a 3.8-liter flat-six powerplant that develops 385 hp (283 kW). This engine is placed directly behind the driver's seat.
The racer weighs just 2,866 pounds (1,300 kilograms). The Cayman GT4 Clubsport, however, comes with a modified six-speed Porsche double clutch PDK transmission with shift paddles on the steering wheel. It also features a mechanical rear-axle locking differential that is developed exclusively for racing purposes.
It inherits its lightweight strut front axle from the 911 GT3 Cup racer and its improved lightweight rear strut suspension with transverse arms from the 911 GT3 Cup. Its brake system is developed for racing as well, with large 15-inch (380-mm) steel brake discs. Six-piston and four-piston aluminum calipers are fitted on the front and rear wheels, respectively.
Moreover, the racer's anti-lock brake system comes with twelve settings while its Electronic Stability Program has been recalibrated for slick racing tires. Power steering, meanwhile, is operated electro-mechanically. As a nearly turnkey product, the Cayman GT4 Clubsport comes with a welded-in safety cage, a racing bucket seat and a six-point harness, as well as a central fire extinguisher system.
Its 18-inch five-bolt forged wheels are wrapped with Michelin's racing tires -- 25/64-18 tires at the front and 27/68-18 tires at the rear. Its North American variant, meanwhile, comes with an 18.5 gallon (70-liter) or an optional 26.5 gallon (100-liter) FIA FT3 safety fuel tank.
For customers in the United States interested in the new Cayman GT4 Clubsport racecar, they could order it directly from Porsche Motorsport North America at $165,000. Homologation of the new Cayman GT4 Clubsport is expected to 2016 racing events like the VLN Long Distance Championship Nürburgring, the Ultra 94 GT3 Cup Challenge Canada and PCA Club Racing Cayman GT4 Clubsport Trophy East.