Athena P400485600272 Top End Gasket Kit for Yamaha YZ450F and YZ450FX

The Athena P400485600272 Top End Gasket Kit is designed for reliable engine service on compatible Yamaha four-stroke models. Manufactured by Athena in state-of-the-art, computer-controlled facilities, this kit is produced to meet or exceed OEM specifications and provide a dependable replacement for worn or damaged top-end gaskets and seals.

Each gasket is made from high-quality materials to support proper sealing, combustion efficiency, and long-term engine performance. The kit includes the necessary gaskets and seals from the base gasket upward, making it a practical choice for top-end rebuilds, routine maintenance, and engine restoration. The kit is engineered for the listed Yamaha applications and should be installed according to the vehicle manufacturer’s service procedures.

Fitment includes the 2023 Yamaha YZ450F; 2024 Yamaha YZ450F and YZ450FX; 2025 Yamaha YZ450F and YZ450FX; and 2026 Yamaha YZ450F and YZ450FX. Verify the motorcycle model year and engine application before installation. The manufacturer part number is Athena P400485600272, and the vendor part number is 69-0690.

Features:

• Manufactured in state-of-the-art, computer-controlled facilities
• High-quality gasket materials support dependable sealing and service life
• Gasket set meets or exceeds OEM specifications
• Includes gaskets and seals from the base gasket upward
• Designed for 2023-2026 Yamaha YZ450F and 2024-2026 Yamaha YZ450FX models