Headstock Bearings: Honda VFR400 (1986-1988) Yamaha CY50 then this could be the

then this could be the solution

Kawasaki ZR 750 Zephyr C1-C5 (1991-1995)

So if you're having spark issues with your WR500Z then it's a no brainer to get a new improved coil on there

You can either use your old ones or purchase a bush kit from us

Headstock Bearings: Honda VFR400 (1986-1988) Yamaha CY50 then this could be theBrand new set of headstock steering bearings to fit: Honda VFR 400 RG (NC21) (1986). Honda VFR 400 Z (NC21) (1986 1987). Honda VFR 400 RG YA (NC21) (1986). Honda VFR 400 RH (NC24) (1987). Honda VFR 400 RH2 (NC24) (1987). Honda VFR 400 RJ (NC24) (1988). Honda VFR 400 RJ3 (NC24) (1988). This set of head stock bearings are taper roller style and have been manufactured to replace the original set of steering bearings on a VFR400 for the years and models