The Porsche 911 GT3 RS - Four-liter six-cylinder boxer engine with high-rev concept

The four-liter high-rev naturally aspirated engine has been further optimized compared with the 911 GT3. The increase in power to 386 kW (525 hp) is achieved primarily via new camshafts with modified cam profiles. The single-throttle intake system and the rigid valve train are derived from motorsport. The Porsche Doppelkupplungsgetriebe (PDK) with seven gears has a shorter overall gear ratio than in the 911 GT3. Air intakes on the underbody ensure that the transmission can withstand even extreme loads during frequent use on the racetrack. The 911 GT3 RS accelerates from zero to 100 km/h in 3.2 seconds and reaches a top speed of 296 km/h in seventh gear. Aluminum monobloc fixed-caliper brakes with six pistons each and brake discs with a diameter of 408 millimeters are used on the front axle. Compared with the 911 GT3, the piston diameters have been increased from 30 to 32 millimeters. In addition, the thickness of the discs has been increased from 34 to 36 millimeters. The rear axle continues to feature 380-millimeter brake discs and four-piston fixed-caliper brakes. The optionally available Porsche Ceramic Composite Brake (PCCB) has 410-millimeter discs on the front axle and 390-millimeter discs on the rear axle. As standard, the new 911 GT3 RS rolls on forged light-alloy wheels with central locking. Road-legal sports tires measuring 275/35 R 20 at the front and 335/30 R21 at the rear ensure a high level of mechanical grip.