The Big Bore Gasket Kit is designed for Yamaha WR450F and YZ450F models equipped with a 478cc big bore cylinder. This comprehensive top-end gasket kit ensures a precise fit and reliable sealing for optimal engine performance.

Features:

• Specifically designed for 478cc big bore applications.
• Includes all necessary gaskets for top-end assembly.

Included Components:

• Head gasket
• Base gasket
• Exhaust gasket
• Cam chain tensioner gasket

Specifications:

• Displacement compatibility: 478cc

Vehicle Fitments:

• Yamaha WR450F: 2003–2006
• Yamaha YZ450F: 2003–2005