Description
A top-end rebuild demands precision-matched components—mismatched or worn gaskets will compromise compression, cause oil leakage, and accelerate wear on fresh internals. The MOOSE RACING Top End Gasket Kit eliminates guesswork by supplying every OEM-spec seal and gasket your YZ450F needs in one complete set, letting you rebuild with confidence rather than hunting down individual pieces. If you’re chasing more compression without the cost of a high-compression piston or machine work, the high-compression variant uses thicker base gaskets to effectively raise your effective compression ratio.
- Yamaha YZ450F fitment
- Bolt-on installation
- Complete top-end gasket set
- OEM replacement seals
- Includes valve seals
- Head, base, exhaust gaskets
- Tensioner and misc. O-rings
- Excludes valve cover gasket
- High-compression option available
- .012″ thicker base gaskets
- Compression gain without machine work
- Made in U.S.A.
- Fraction of OEM cost
- MPN: 810689mse
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