Moose Racing Valve Seal Kit for Yamaha WR250F and YZ250F (M80-80440)

Maintain reliable valve-train sealing with the Moose Offroad M80-80440 Valve Seal Kit, designed for compatible Yamaha WR250F and YZ250F applications. The kit includes one complete set of intake and exhaust valve seals, providing a convenient replacement solution for engine service and rebuilding. Its contact surfaces are engineered to promote improved sealing performance and help support consistent operation under demanding riding conditions.
The seals are manufactured with high-temperature Viton® and PTFE materials to provide dependable performance in elevated engine temperatures. Compared with standard OEM specifications, the Moose Offroad M80-80440 kit offers improved tolerance for a precise fit and reliable sealing. These material and design features help reduce the risk of leakage while supporting proper engine function during off-road use.
Each Moose Offroad valve seal kit is 100% quality controlled for dependable manufacturing consistency. The complete intake and exhaust seal set helps simplify installation by providing the seals needed for a comprehensive valve service. Made in the USA, this kit is a practical choice for riders and technicians seeking durable replacement components for compatible Yamaha four-stroke applications.

Features:

• Improved sealing: Contact surfaces are designed to support reliable valve-to-guide sealing.

• High-temperature materials: Constructed with Viton® and PTFE for dependable performance in elevated engine temperatures.

• Improved tolerance: Designed to provide improved tolerance over OEM specifications for a precise replacement fit.

• Complete seal set: Includes one full set of intake and exhaust valve seals.

• Quality controlled: 100% quality controlled for consistent manufacturing standards.

• Made in the USA: Manufactured in the United States.

Ships from Parts Unlimited.