Headstock Bearings: Honda XR500 XR 500 (1981-1984) Yamaha YZF600 and for the price difference

and for the price difference it's worth getting an upgraded racing coil on the bike

If you are having spark issues on your Yamaha FZX750 then the ignition coils could be the culprit

Brand new high peformance racing ignition coil to fit:

Please see other listings for this version

This is a high performance coil where you'll bypass the resistor (if you still have one fitted and hasn't been bypassed already)

Headstock Bearings: Honda XR500 XR 500 (1981-1984) Yamaha YZF600 and for the price differenceBrand new set of headstock steering bearings to fit: Honda XR 500 R (1981 1984). This set of head stock bearings are taper roller style and have been manufactured to replace the original set of steering bearings on an XR500 for the years and models shown above. Top and bottom headstock bearings. Both sized ID26 x OD47 x WTH15. All sizes in mm