Porsche has a long tradition of offering customer racing variants of its Cayman models. The Cayman GT4 Clubsport, introduced for 2016, competed successfully in the GT4 European Series, British GT Championship, Blancpain GT Series Asia, and the North American Continental Tire SportsCar Challenge. A second-generation GT4 Clubsport based on the 718 platform arrived for 2019, featuring a 3.8-litre flat-six engine producing 425 PS (313 kW) at 7,500 rpm and a 6-speed PDK gearbox.
The GT4 RS Clubsport followed from the 2021 introduction of the 718 Cayman GT4 RS road car, which received the RS designation for the first time in Cayman history. The RS road car brought the naturally aspirated 4.0-litre flat-six engine from the 911 GT3 into the Cayman, lifting power significantly over the GT4.
The GT4 RS Clubsport is powered by the same 4.0-litre naturally aspirated flat-six engine shared with the 911 GT3 and the GT4 RS road car. In Clubsport trim, the engine produces 500 PS (368 kW; 493 hp) at 8,300 rpm, matching the road car's output. Peak torque is 465 N·m (343 lb·ft) at 6,600 rpm. The engine is paired to a 7-speed dual-clutch transmission (PDK), an upgrade over the 6-speed unit used in the predecessor GT4 Clubsport.
The naturally aspirated configuration means power delivery is linear and entirely dependent on engine speed rather than boost pressure, which gives the car a character well suited to the precision demands of GT4 racing.
The GT4 RS Clubsport was designed for GT4 class competition in series around the world, including the GT4 European Series, IMSA Michelin Pilot Challenge, Porsche Sprint Challenge championships, and similar national GT4 championships. The GT4 class positions the car below GT3 machinery in professional touring car racing, with standardized Balance of Performance regulations allowing different GT4 cars to compete together.
The previous GT4 Clubsport had established Porsche as a major force in GT4 racing across Europe and North America, with the 718-based car winning championships in multiple series. The GT4 RS Clubsport continued that program with the higher-output RS powertrain.
Like its predecessor GT4 Clubsport, the RS Clubsport is built for customer teams rather than factory racing programs. Porsche supplies the cars ready to race, with safety equipment including a welded roll cage, six-point harness, and race bucket seat. The front suspension uses components from the 911 GT3 Cup. The car's aero package includes the swan-neck rear wing mount first seen on the GT4 RS road car, which generates 25 percent more downforce than the standard GT4 configuration.
The GT4 RS Clubsport is offered in Competition and Trackday variants, following the format established by the GT4 Clubsport. The Competition variant includes features suited to endurance and sprint racing, while the Trackday variant is configured for non-competitive track use and club events.
The GT4 RS Clubsport sits at the apex of the Cayman racing car lineup. The GT4 RS road car was the first Cayman to receive Porsche's RS designation, historically reserved for 911 models, and the Clubsport variant carried that elevated specification directly into customer motorsport. The 4.0-litre engine shared with the 911 GT3 gives the RS Clubsport a technical connection to Porsche's highest-performing naturally aspirated road car engine, distinguishing it clearly from the 3.8-litre unit in the standard GT4 Clubsport.