PORSCHE Cayman GT4
Generations Timeline, Specs and Pictures
The GT4 category was the least powerful class in the FIA GT series.
Its vehicles were based on cars available to the public. The Cayman GT4 was designed to fit in that category.
Porsche had a long history of motor racing and its target was to be on top places in all class categories. While the 911 was well known in the GT3 and GT2 classes, the GT4 category was assigned to the Cayman, even though the 911 had the FIA approval for that class as well. But the Cayman GT4 was built and it was a blast.
Unlike its siblings, the race-inspired look was striking. The front apron was lower with a much wider center grille. The side-sills and the side-intakes were larger. In the back, the carmaker installed an adjustable wing. For the rear apron, a diffuser was installed and, unlike the rest of the stable, it featured two exhausts that were not mounted in the middle.
Inside, a roll-cage was available behind the seats, to stiffen the bodywork. The carbon-fiber bucket-seats offered high bolstering. Their center was upholstered with Alcantara. On the center stack, there was no infotainment system. Just a big squared pocket good for some racing equipment.
The suspension was specially developed for the GT4 version. The 4.0-liter 6-cylinder flat engine was naturally aspirated and mated to a 6-speed manual gearbox, with a close-ratio developed for track use. The mechanical differential lock was standard as well. It was a true race-car which was dressed with airbags and a gasoline particulate filter so it could have been driven legally on public roads. It developed 420 hp and it could rev up to 8.000 rpm.
It was the fastest version of a Cayman from its era.
It was built to destroy competition over the race-track and to bring a huge smile on its owner’s face and get closer to the super-car territory.
Not too much time before the Cayman GT4 was launched, a 4.4-second car from 0 to 100 kph (0-62 mph) was considered a supercar. The 2009 Ferrari 360 could top the same mark in 4.9 seconds and it was considered a supercar. The GT4 was not just a Cayman with more power. It was the most extreme Cayman to the release date. The car was produced by Porsche Racing Department.
In the front, a lower lip along the apron the big wheels, and the adjustable rear wing in the back were just the warning label. An exhaust scoop was placed on top of the front bumper, to extract the air after it cooled the front radiators. The side air-intakes for the engine were bigger than on the regular Cayman. Through the big, 20”, light-alloy wheels, the Porsche Ceramic Composite Brake discs were exposed.
The interior was not that different from a Cayman S fitted with a manual gearbox. The light race-bucket seats and the Alcantara materials used on the dashboard were a sign of quality.
The drivetrain received the engine from the Porsche 911 Carrera. It was a turbocharged flat-six that offered 385 hp and it was mated exclusively with a 6-speed manual. The rear-differential lock was a standard feature. With all the enhancements provided, the Cayman GT4 could lap the Nurburgring race-track in 7 minutes 40 seconds, a time which placed it in the same second with Lamborghini Murcielago (640 hp) and faster than a 2012 Chevrolet Camaro ZL1.