Description
Upgrade your Yamaha’s performance with the Cometic Top End Gasket Kit for 77mm bore engines. This high-performance kit includes the correct base, head gasket, cylinder O-rings, and additional top end specific seals needed for reliable top end rebuilds. Cometic’s MLS head gaskets promote even torque load across the gasket sealing surface, minimizing bore distortion and improving piston ring seal for greater power. Designed for today’s high-output 4-stroke engines, the gaskets feature a multi-layered steel construction with Viton rubber coating for superior sealing and heat dissipation. Made in the USA.
- Includes all top end gaskets and O-rings required for 2019-2023 Yamaha YZ250F, 2019-2023 WR250F, and 2020-2023 YZ250FX
- 77mm bore size, multi-layer steel design
- Extreme Sealing Technology (EST) ensures maximum reliability
- Impervious to fuels, coolants, and oils
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