Athena R2106-319 - Athena Top End Race Gasket Kit For Honda CRF250R 2018-2021

Features: Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during mid-season. 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 does not include valve stem seals, rubber parts, shims, or other fiber gaskets..