Radical SR4 252

Radical currently sells six different models, all of which can be converted to street use in certain countries except for the SR9. Various options, most notably in the powerplants, are available on all of the cars. The car is built on a spaceframe chassis, and uses a variety of Powertec-tuned motorcycle engines for power. Turbocharging is also available on the motors for even more power. Although the SR4 car shares most of the engine and powertrain from the SR3, the SR4 features all new bodywork and undertray, including a front diffuser, in order to make it a more capable track car. Also widely used in various national racing series.