Cylinder Kit - 54.00 mm - YZ125 Race
Aluminum cylinder is nickel carbide coated designed with larger water jackets
Specially designed, high performance, hard anodized power valves (cannot use OEM)
There is an aluminum cylinder head with a removable bronze dome allowing for a higher compression ratio and anti-detonation features (except where noted)
Kit also includes a Cast-Lite flat top piston kit, and an Athena top-end gasket set that includes required seals and hardware
Bolt on; no matching required except where noted