ATHENA Top End Gasket Kit - Yamaha P400485600520

Top End Gasket Kit - Yamaha
Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason, Gives the rider a choice of using standard gas with stock compression, or race gas with a higher compression., Specifically designed for the pro, semi-pro and amateur rider, Freshens up their engine prior to a race or during mid-season, Kits do not include valve stem seals, rubber part, shims or other fiber gaskets.