The RS Spyder is a race car built by Porsche. It marks the return of the Porsche factory to the upper echelons of sports car racing since the Porsche 911 GT1 finished the 1998 season.

The RS Spyder is named after the legendary 550 Spyder of the 1950's (combined with Porsche's common RS designation, for "Renn Sport"). This car marks Porsche's return to the Le Mans-type of sports car racing since the firm abandoned its latest Le Mans prototype in 1999, leaving the category for Audi to dominate.

2010 Porsche 911 GT3 Cup sporty race cars

This is the first GT3 Cup to feature the 44-millimetre (1.73′) wider body at the rear, providing sufficient space for even larger wheels. Wider wheel arches also at the front clearly show that the front wheels are likewise new

The power unit featured in the new 911 GT3 Cup is largely identical to the production engine in the 911 GT3 RS – same output of 450 bhp and same maximum engine speed of 8,500 rpm. Capacity of the Cup engine, however, is up from 3.6 litres on the former model to 3.8 litres on the new car, helping to increase engine power by 30 bhp