Description
A top-end rebuild demands precision seals and gaskets that won’t compromise your engine’s integrity or performance. The MOOSE RACING Top End Gasket Kit delivers OEM-quality replacement seals at a fraction of the cost, allowing you to approach your YZ 250 rebuild with total confidence. Whether you’re replacing a worn piston or fine-tuning compression, this comprehensive kit eliminates the frustration of sourcing individual components and ensures every joint seals properly the first time.
What’s Included:
- Valve seals
- Head gasket
- Base gasket
- Exhaust gasket
- Tensioner gasket
- O-rings and misc. seals
- Genuine OEM oil seals
Key Specifications:
- Vehicle Fitment: Yamaha YZ 250
- MPN: 810665mse
- Material: High-tech elastomers, stainless steel
- Oil Seals: OEM replacement quality
- Gasket Base Thickness: Standard (.012″ high-compression option available)
- Manufacturing: Made in U.S.A.
- Installation: Bolt-on replacement
- Application: Complete top-end rebuilds, piston replacement
- Note: Does not include formed rubber valve cover gasket (included in complete kit with oil seals)






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