Athena Top End Gasket Kit for Honda (P400210600221)

The Athena P400210600221 Top End Gasket Kit is designed for professional, semi-professional, and amateur riders who want to refresh their Honda engine before a race or during the riding season. This kit provides the essential top-end sealing components needed for a reliable engine rebuild while supporting performance-focused applications.
The kit includes a premium MLSS head gasket and multiple high-quality base gaskets in different thicknesses. These gasket options allow riders and engine builders to fine-tune the engine’s compression ratio according to the intended fuel and performance setup. Use the appropriate base gasket for stock compression with standard pump gas, or select a different thickness when configuring the engine for higher compression and race fuel.
Athena manufactures this kit with attention to fit, sealing performance, and application-specific compatibility. The P400210600221 kit is a practical choice for maintaining consistent combustion sealing during demanding riding conditions, whether preparing a race bike, completing midseason maintenance, or rebuilding the top end. Verify the application and engine specifications before installation to ensure the correct gasket configuration.
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 to complete the installation, depending on the condition of the engine and the scope of the rebuild.

Features:

• Brand: Athena

• Part Number: P400210600221

• Application: Designed for compatible Honda engine top-end service

• Rider Level: Suitable for professional, semi-professional, and amateur riders

• Head Gasket: Includes a premium MLSS head gasket

• Base Gaskets: Includes multiple thickness options for compression-ratio adjustment

• Fuel Flexibility: Supports stock-compression setups with standard gas or higher-compression setups with race gas

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

Ships from Parts Unlimited.