The Ball is the most widely applied product in the GT250 1979 (N) (E01 E02 E04 E06 E22 E24 E30 E4?) HANDLEBAR ( twenty-two times ). thirty components are listed in the schematic for this Gt250 1979 (n) (e01 E02 E04 E06 E22 E24 E30 E4?) Handlebar .