Engine

Two-stroke pistons are made from 4032 silicium Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons Both include 3% copper in materials for better heat resistance All pistons are forged using a precision...

Includes rings, clips and pin Easy-to-follow step-by-step installation instructions. PISTON KIT YZ125LC A

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...

Kit includes complete aluminum cylinder, with a nickel carbide plated bore, cylinder head, piston, rings, 10 mm wrist pin, circlips, carbon reeds and all required top-end gaskets This cylinder kit can be installed without making any changes to the engine...

Kit includes complete aluminum cylinder, with a nickel carbide plated bore, cylinder head, piston, rings, 10 mm wrist pin, circlips, carbon reeds and all required top-end gaskets This cylinder kit can be installed without making any changes to the engine...

Head gaskets feature rubber-coated spring steel construction Soft steel base gaskets are rubber coated Steel core materials feature high spring-back and superior tensile strength Revolutionary transparent coating guarantees a perfect seal even at...

Includes rings, clips and pin Easy-to-follow step-by-step installation instructions. PISTON KIT CRF250R/X A

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...

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...

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...

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...