Description
Features
- Aluminum cylinder with nickel carbide coating and aluminum cylinder head with removeable bronze dome
- Specially designed, high performance, hard anodized power valves (cannot use OEM)
- Kit also includes Athena top end gasket set with required seals and hardware
- Piston kit includes a forged race piston, rings, clips and pin
| Position | Notes | |||
|---|---|---|---|---|
| 2003-2025 | Yamaha | YZ250 | - | - |
