Radical Motorsport introduces the updated SR1 into the XXR version as the first major improvement to its entry-level race car in six years. The machine boasts a redesigned body and an upgraded engine.
Power comes from the Generation 5 version of Radical Precision Engineering's 1.34-liter four-cylinder engine. It makes 198.8 horsepower and 120.1 pound-feet of torque. The powerplant weighs 183 pounds (83 kilograms), which includes the intake manifold, alternator, starter, and bell housing. The mill connects to a six-speed sequential gearbox.
