Namura Top End Gasket Kit for Yamaha 2020-2022 YZ450F & 2021-2023 YZ450FX WR450F

Namura Top End Gasket Kit for Yamaha

This Namura top end gasket kit provides all the seals needed to rebuild the cylinder head and cylinder base on select Yamaha YZ450F, YZ450FX, and WR450F models from 2020-2023.

Overview

The Namura top end gasket kit is a comprehensive set of gaskets and seals for Yamaha 2020-2022 YZ450F and 2021-2023 YZ450FX/WR450F engines. It includes head gasket, base gasket, valve cover gasket, and other necessary seals to reseal the top end during rebuilds. This gasket kit ensures a leak-free assembly after replacing the piston or servicing the cylinder head.

Built For Performance

• Includes high-quality MLS (multi-layer steel) head gasket
• OEM-style rubber seals for valve cover and other joints
• Pre-cut base gasket matches cylinder-to-crankcase interface
• All gaskets are designed to withstand high heat and pressure
• Complete kit eliminates need for separate purchases

Fits These Machines

• for Yamaha YZ450F (2020-2022)
• for Yamaha YZ450FX (2021-2023)
• for Yamaha WR450F (2021-2023)

On-The-Job Use

• Top-end rebuilds after piston or cylinder head work
• Replacing worn or leaking gaskets during engine overhaul
• Preventive maintenance on high-hour competition bikes
• Restoring compression seal after cylinder removal

Specs At A Glance

Good To Know

Q: Does this gasket kit include the exhaust gaskets? A: This kit covers the cylinder head and cylinder base seals; exhaust and intake port gaskets are sold separately.

Q: Can I reuse the old gaskets with this kit? A: No, always install all new gaskets from the kit to ensure a proper seal and avoid leaks.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.