Athena Top End Gasket Kit for Yamaha (P400485600212)

The Athena P400485600212 Top End Gasket Kit is designed for professional, semi-professional, and amateur riders who need to refresh an engine before a race or during the middle of the season. This application-focused kit supports reliable top-end service while helping maintain proper sealing and engine performance during demanding riding conditions.
The kit includes a premium MLSS head gasket and multiple high-quality base gaskets with different thicknesses. This selection allows the rider or technician to adjust the engine compression ratio according to the intended fuel and performance setup. The configuration can support standard pump gas with stock compression or race gas with a higher compression ratio when used with a compatible engine specification and tuning strategy.
Athena is known for producing precision motorcycle engine sealing components, and the P400485600212 kit is intended to provide a practical solution for top-end maintenance. Selecting the appropriate base gasket thickness is important for achieving the desired compression, cylinder positioning, and overall engine setup. Always compare the replacement components with the original parts and follow the motorcycle manufacturer's service procedures during installation.
This Athena top end gasket kit does not include valve stem seals, rubber components, shims, or other fiber gaskets. Additional replacement parts may be required depending on the engine's service condition and the scope of the repair. Verify vehicle compatibility before installation to ensure the kit matches the Yamaha application and intended engine configuration.

Features:

• Application: Designed for professional, semi-professional, and amateur riders servicing the engine before a race or during midseason

• Kit Contents: Includes a premium MLSS head gasket and multiple base gaskets with different thicknesses

• Compression Tuning: Provides gasket options for stock compression with standard gas or higher compression with race gas

• Brand: Athena

• Part Number: P400485600212

• Exclusions: Does not include valve stem seals, rubber parts, shims, or other fiber gaskets

Ships from Parts Unlimited.