Headstock Bearings: Yamaha YZ250 YZ 250 (1977-1987) Yamaha YFM200 This performance ignition coil pack

Headstock Bearings: Yamaha YZ250 YZ 250 (1977 1987) Yamaha YFM200 This performance ignition coil pack This performance ignition coil pack has been manufactured to be an upgrade on the original coil on a Yamaha WR250 for the years and models shown above This high performance ignition coil has been manufactured to be an upgrade on the original coil on a Yamaha YZ125 for the years and models shown above Top bearing sized ID25 x OD47 x WTH15 and bottom bearing sized ID30x OD55 x WTH17 This set of head stock bearings are taper roller style and have been manufactured to replace the original set of steering (cup and cone style) bearings on a Yamaha YZ250 for the years and models shown above