WHAT IS A SUPERSPORT SPEC RACE BIKE?
WSBK Supersport: A production 600cc (or 675cc) machine with a standard frame, swingarm and fuel tank, with a minimum weight of 161kg. The engine can be quite heavily fettled internally to create around 150bhp: for example you can play with the cam timing and go to work on porting and polishing the cylinder head and combustion chamber. A kit ECU is allowed, alongside a slipper clutch and quickshifter and aftermarket suspension.
BSB GP2: A full prototype or modified production chassis, swingarms, upper and lower yokes, bodywork, and fuel tanks. Aftermarket suspension is allowed and the machine can use any three- or four-cylinder engine, as long as the engine is listed on the FIM homologation list. The engine has to be built to Superstock spec, with a maximum output of 125bhp and the addition of a kit ECU, quickshifter and a slipper clutch. The minimum weight is 222kg for both rider and bike.
BSB Supersport: This stepping stone to British Superbike and the World championships has rules that are somewhat similar to those of World Supersport. Each team has to use a production 600cc (or 675cc) machine with a standard frame, swingarm and fuel tank as a base model. Engine wise, there is only an allowance for changes in the cam timing, alongside a quickshifter, Motec electronics and aftermarket suspension.