ATHENA Top-End Gasket Kit YAMAHA YZ 85 18-21

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

Kits do not include valve stem seals, rubber parts, shims, or other fiber gaskets

For use with Athena standard-bore cylinder kit.

Fit the models: