Engine

High performance, hard anodized power valves (cannot use OEM) Forged OEM-style domed piston kit Aluminum cylinder with nickel-carbide coating, ported to Factory Works specs Athena top-end gasket set including required seals and hardware Kit does not...

Kit includes aluminum cylinder with nickel-carbide coating designed with larger water jackets Specially designed, high performance, hard anodized power valves (cannot use OEM) Forged piston with molybdenum coating Does not include cylinder head....

Superior-quality gasket sets from Athena Head gaskets feature rubber-coated spring steel construction Soft steel base gaskets are rubber coated Steel core materials feature high springback and superior tensile strength Revolutionary transparent coating...

Superior-quality gasket sets from Athena Head gaskets feature rubber-coated spring steel construction Soft steel base gaskets are rubber coated Steel core materials feature high springback and superior tensile strength Revolutionary transparent coating...

Superior-quality gasket sets from Athena Head gaskets feature rubber-coated spring steel construction Soft steel base gaskets are rubber coated Steel core materials feature high springback and superior tensile strength Revolutionary transparent coating...

Kit includes aluminum cylinder with nickel-carbide coating designed with larger water jackets Specially designed, high performance, hard anodized power valves (cannot use OEM) Forged piston with molybdenum coating Does not include cylinder head....

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...

Superior-quality gasket sets from Athena Head gaskets feature rubber-coated spring steel construction Soft steel base gaskets are rubber coated Steel core materials feature high springback and superior tensile strength Revolutionary transparent coating...

Superior-quality gasket sets from Athena Head gaskets feature rubber-coated spring steel construction Soft steel base gaskets are rubber coated Steel core materials feature high springback and superior tensile strength Revolutionary transparent coating...

Superior-quality gasket sets from Athena Head gaskets feature rubber-coated spring steel construction Soft steel base gaskets are rubber coated Steel core materials feature high springback and superior tensile strength Revolutionary transparent coating...

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...

Made of high-performance aluminum alloy with high silicon content that guarantee the same reliability of the OE piston, while at the same time providing greater resistance and excellent performance The smooth profile ensures a regular flow and the...