Headstock Bearings and Seals: Suzuki SP400 SP 400 (1980) Yamaha XJ600 If you're having spark problems

If you're having spark problems on your Honda CB1 / CB400 then it's a good idea to get some new coils on the bike as these could be the culprit to a weak spark

If you have a weak spark on your Kawasaki Z400 then the coils could be the culprit and it's a good idea to get some new coils on the bike

Both top and bottom RD500 head stock bearings are included

Seals aren't included in the measurements taken

Headstock Bearings and Seals: Suzuki SP400 SP 400 (1980) Yamaha XJ600 If you're having spark problemsBrand new set of headstock steering bearings with seals to fit: Suzuki SP 400 (1980). 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 SP400 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 aren't included in the measurements taken. All sizes