Brand new set of headstock / steering bearings to fit:
Yamaha YZ 490 (1981-1988).
These steering bearings are taper roller style and have been designed to replace the original bearing set on a Yamaha YZ490 for the years shown above. The sizes are as follows:
Top bearing sized ID25 x OD47 x WTH15.
Bottom bearing sized ID30x OD55 x WTH17.
All sizes in mm