MJF Superbike (All Japan Road Race Championship)

All Japan Road Race Championship is the premiere motorcycle road racing championship in Japan (or MJF Superbike). It is run by the Motorcycle Federation of Japan (MFJ) - the Japaneses affiliate of the FIM.
MFJ was formed in 1961 and held its first motorcycle road race in 1967.
The Championship's premiere class for a number of years had been GP500 but it was replaced by a superbike class in 1994.During the 2002 season the championship was used by some manufacturers to test their MotoGP prototypes. The prototypes usually won the races but were not eligible for points. The series now runs a small 7 round schedule but has a large field of Japanese riders and bikes.