Athena Top End Gasket Kit - Yamaha P400485600133

• Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason • Kit includes a top-of-the line MLSS head gasket and two or more premium quality base gaskets of different thicknesses to optimize engine compression ratios • Gives the rider a choice of using standard gas with stock compression, or race gas with a higher compression • Kit do not includes valve stem seals, rubber part, shims or other fiber gaskets. - Yamaha DT 125 (1979, 1977, 1978)