Athena Top End Gasket Kit for Yamaha (P400485600116)

The Athena P400485600116 Top End Gasket Kit is designed for professional, semi-professional, and amateur riders who want to refresh the engine before a race or during the riding season. This performance-oriented kit helps support a reliable top-end rebuild while giving riders flexibility when setting engine compression for different fuel choices and riding requirements.

The kit includes a premium MLSS head gasket along with two or more high-quality base gaskets in different thicknesses. This selection allows compression ratio optimization during assembly, making it possible to use standard pump gas with stock compression or race fuel with a higher compression setup when appropriate. The included gasket options help provide a practical solution for tuning engine performance without requiring a separate gasket purchase for each configuration.

Designed for Yamaha applications, this Athena gasket kit is intended for riders and technicians who demand dependable sealing components during engine service. Each gasket is produced to support proper fitment and consistent performance when installed according to the engine manufacturer's procedures. The kit is focused on top-end gasket replacement and compression adjustment, making it a useful choice for race preparation, seasonal maintenance, or a performance engine rebuild.

Important: The Athena P400485600116 kit does not include valve stem seals, rubber parts, shims, or additional fiber gaskets. Verify application compatibility and select the appropriate base gasket thickness before installation.

Features:

• Application: Designed for professional, semi-professional, and amateur riders refreshing an engine before a race or during the riding season
• Head Gasket: Includes a premium MLSS head gasket for dependable top-end sealing
• Base Gaskets: Includes two or more base gaskets in different thicknesses for compression ratio adjustment
• Fuel Flexibility: Supports stock-compression setups using standard gas or higher-compression setups using race gas
• Application Fit: Designed for compatible Yamaha engine applications
• Kit Contents: Does not include valve stem seals, rubber parts, shims, or additional fiber gaskets

Ships from Parts Unlimited.