headstock bearings yamaha ty50 ty 50 1977 1981 Suzuki GS400 then this is the coil

then this is the coil for you

To replace cylinder: 12100-KCS-650

This CDI (Brain or ECU as it's sometimes known) has been designed to replace the original unit on a speedfight 4 50cc 2 stroke

To replace OEM: 21121-1174 or 21121-083

headstock bearings yamaha ty50 ty 50 1977 1981 Suzuki GS400 then this is the coilBrand new set of headstock steering bearings to fit: Yamaha TY 50 M (1977 1980). This set of head stock bearings are taper roller style and have been manufactured to replace the original set of steering bearings on a Yamaha TY50 for the years and models shown above. Top sized: 25mm x 43mm x 12mm. Bottom sized: 30mm x 48mm x 12mm. All sizes set out ID x OD x Thickness. The top and bottom steering bearings are included. The seals are not included.