Headstock Bearings: Yamaha FZR750 FZR 750 (1989-1990) Yamaha TT600 The models are: F1

The models are: F1

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It will replace the models RR to RW and the RS2 limited edition model

21121-1038

If you're having spark issues with your YTZ 250 then it's a no brainer to get a new upgraded coil on the bike

Headstock Bearings: Yamaha FZR750 FZR 750 (1989-1990) Yamaha TT600 The models are: F1Brand new set of headstock steering bearings to fit: Yamaha FZR 750 R (OW01) (1989 1990). This set of head stock bearings are taper roller style bearings that have been manufactured to replace the original set of steering bearings 93399 99931 and 93399 99932 on a Yamaha FZR750 for the years and models shown above. Top bearing sized ID25 x OD47 x WTH15. Bottom bearing sized ID30x OD55 x WTH17. Sizes shown are in mm.