Athena Top End Gasket Kit for Yamaha (P400485600115/1)

The Athena P400485600115/1 Top End Gasket Kit is designed for professional, semi-professional, and amateur riders who refresh the engine before a race or during the riding season. This performance-focused kit provides the essential top-end sealing components needed to support a reliable engine rebuild and help maintain consistent compression.
The kit includes a premium MLSS head gasket along with multiple base gaskets in different thicknesses. This selection allows the rider or technician to fine-tune the engine compression ratio according to the intended fuel and performance setup. Use the appropriate gasket combination for stock compression with standard pump gas, or select a higher-compression configuration when running race fuel and a suitably prepared engine.
Feature: Designed for pre-race and midseason engine refreshes. Feature: Includes a high-quality MLSS head gasket. Feature: Provides multiple base gasket thicknesses for compression-ratio adjustment. Feature: Supports standard-gas and race-gas engine configurations. Feature: Designed for Yamaha applications. Athena part number P400485600115/1 identifies the correct replacement kit for the specified application.
This Athena top-end gasket kit is intended for riders and engine builders who need flexible compression tuning during maintenance or performance preparation. Valve stem seals, rubber components, shims, and additional fiber gaskets are not included, so inspect the engine and obtain any required supplementary parts before assembly. Follow the manufacturer's service procedures and torque specifications for proper installation.

Features:

• Designed for professional, semi-professional, and amateur riders

• Suitable for pre-race or midseason engine refreshes

• Includes a premium MLSS head gasket

• Includes multiple base gaskets in different thicknesses

• Allows compression-ratio adjustment for standard or race fuel

• Designed for Yamaha applications

• Valve stem seals, rubber parts, shims, and additional fiber gaskets are not included

Ships from Parts Unlimited.