Headstock Bearings and Seals: Suzuki GS400 GS 400 (1977-1979) Kawasaki KH400 If you're having spark issues

If you're having spark issues with your YFM 400 then it's no brainer to get an upgraded coil on the bike to improve your spark

This fuel tap has been manufactured to replace the original petrol tap on a Vespa PK50 for the years and models shown above

Kawasaki KX 250 G1 (1989)

If you are having spark issues on your Yamaha FZR1000 then the ignition coils could be the culprit

Headstock Bearings and Seals: Suzuki GS400 GS 400 (1977-1979) Kawasaki KH400 If you're having spark issuesBrand new set of headstock steering bearings with seals to fit: Suzuki GS 400 (E Start) (1977 1979). Suzuki GS 400 X (K Start) (1977 1978). This set of head stock bearings are taper roller style and have been manufactured to replace the original set of steering bearings on a Suzuki GS400 for the years and models shown above. Top and bottom steering bearings with seals are included. Top sized ID25 x OD48 x WTH15. Bottom sized ID27 x OD48 x WTH12. Seals