Top-End Gasket KitSpecifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseasonKit includes a top-of-the line MLSS head gasket and two or more premium quality base gaskets of different thicknesses to optimize engine compression ratiosGives the rider a choice of using standard gas with stock compression, or race gas with a higher compressionKits include a top-of-the line MLSS head gasket and two or more premium quality base gaskets of different thicknesses to optimize engine compression ratiosGives the rider a choice of using standard gas with stock compression, or race gas with a higher compressionKit do not includes valve stem seals, rubber part, shims or other fiber gaskets.Kits do not include valve stem seals, rubber parts, shims, or other fiber gaskets