GT4 RS is lighter, more powerful and gets tuned aero and suspension; 0-62mph in 3.4sec, 196mph. The Porsche Cayman GT4 RS is the new flagship of the mid-engined 718 range, shedding weight and gaining power over the existing GT4 in pursuit of quicker lap times. Engineers at Porsche's motorsport division have liberated an extra 79bhp and 15lb ft from the Cayman's naturally aspirated 4.0-litre flat six, which redlines at 9000rpm. That takes the total outputs to 493bhp and 332lb ft for a 0-62mph time of just 3.4sec and a top speed of 196mph. Power is sent to the rear axle through a seven-speed PDK automatic gearbox, which shifts "at lightning speed", according to Porsche.
展开▼
