Athena Top End Gasket Kit for Yamaha (P400485600187)

The Athena P400485600187 Top End Gasket Kit is designed for professional, semi-professional, and amateur riders who refresh their engine before a race or during the riding season. This application-specific kit provides the essential top-end sealing components needed for dependable engine service and consistent performance. Athena is recognized for producing precision-engineered replacement components, and this kit is built to support proper fitment and reliable sealing in compatible Yamaha engines.
The kit includes a premium MLSS head gasket along with two or more high-quality base gaskets in different thicknesses. This selection allows riders and engine builders to adjust the compression ratio according to the intended fuel and performance setup. Use the appropriate gasket combination with standard pump gas for a stock-style compression ratio, or select a suitable configuration for higher compression when race fuel is part of the engine setup. The available base gasket options provide useful flexibility during top-end assembly and tuning.
Feature: Designed for professional, semi-professional, and amateur riders refreshing an engine before a race or during the riding season.
Feature: Includes a premium MLSS head gasket for dependable top-end sealing.
Feature: Provides two or more base gaskets with different thicknesses for compression-ratio adjustment.
Feature: Supports stock-compression setups using standard gas or higher-compression setups using race gas.
Feature: Application-specific design for compatible Yamaha engines.
The Athena P400485600187 kit is intended for top-end gasket replacement and compression setup work. Valve stem seals, rubber components, shims, and other fiber gaskets are not included, so verify the complete service requirement before beginning installation. Confirm vehicle compatibility and follow the engine manufacturer’s assembly procedures, torque specifications, and sealing-surface preparation guidelines for the best results.

Features:

• Designed for professional, semi-professional, and amateur riders refreshing an engine before a race or during the riding season.

• Includes a premium MLSS head gasket for dependable top-end sealing.

• Provides two or more base gaskets with different thicknesses for compression-ratio adjustment.

• Supports stock-compression setups using standard gas or higher-compression setups using race gas.

• Application-specific design for compatible Yamaha engines.

• Valve stem seals, rubber components, shims, and other fiber gaskets are not included.

Ships from Parts Unlimited.