The Porsche Cayman GT4 is a track-oriented sports car based on the mid-engined Cayman 981c model generation. The 3.8 litre flat-six engine was borrowed from the 991 Carrera S although in a slightly de-tuned configuration. The front suspension, several parts from the rear axle and brakes are derived from the 991 GT3. A modified front bumper and fixed rear wing have been applied to increase downforce.