MOOSE RACING Top End Gasket Kit - YZ/IT490 810680

A top-end rebuild demands precision gasket selection—mismatched seals lead to leaks, compression loss, and catastrophic engine failure. The MOOSE RACING Top End Gasket Kit eliminates guesswork by providing every OEM-equivalent seal and gasket your YZ/IT490 needs, all manufactured to exacting tolerances and backed by genuine materials. Whether you're replacing a worn piston or performing routine maintenance, this complete kit delivers the reliability of factory specifications at a fraction of OEM pricing.

The high-compression option offers a practical path to increased compression ratios without investing in expensive piston upgrades or cylinder head modifications—simply swap in the .012" thick base gasket to boost performance affordably.

• Fits YZ/IT490 models
• Complete top-end gasket set
• Genuine OEM-equivalent seals
• Includes valve seals, head gasket
• Base, exhaust, tensioner gaskets
• All O-rings and miscellaneous seals
• High-compression base option available
• .012" thick HC base gaskets
• Excludes formed rubber valve cover
• U.S.A. manufactured materials
• Bolt-on installation required
• MPN: 810680mse