Moose Racing Valve Seal Kit for Kawasaki KX250F (M40-40160)

The Moose Offroad M40-40160 Valve Seal Kit is designed to help restore reliable valve sealing in compatible Kawasaki KX250F engines. Built as a direct replacement-style solution, this kit supports improved sealing performance while helping reduce the risk of oil leakage through the valve guides. It is a practical choice for engine rebuilds, top-end service, and routine maintenance when dependable replacement seals are required.
The seal surfaces are engineered for improved contact and sealing, while high-temperature Viton® and PTFE materials provide durability in demanding engine environments. These materials are selected to withstand the heat and operating conditions associated with performance four-stroke motorcycle engines. Improved tolerance over OEM specifications helps promote consistent fitment and dependable operation when installed according to the motorcycle manufacturer’s service procedures.
Each Moose Offroad M40-40160 kit includes one complete set of intake and exhaust valve seals, providing the coverage needed to service the valve train during a top-end rebuild. Every kit is 100% quality controlled for dependable manufacturing consistency. Made in the USA, this valve seal kit offers a trusted replacement option for riders, mechanics, and powersports professionals maintaining compatible Kawasaki KX250F applications.
Before installation, verify compatibility with your specific model year and engine configuration. Proper cleaning, inspection, and installation are recommended to help ensure the seals seat correctly and deliver lasting performance.

Features:

• Improved sealing: Contact surfaces are designed to promote a reliable seal around the valve guides

• High-temperature materials: Constructed with durable Viton® and PTFE materials for demanding engine conditions

• Improved tolerance: Designed to provide improved tolerance compared with OEM-style seals

• Complete service kit: 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

• Application: Designed for compatible Kawasaki KX250F engines

Ships from Parts Unlimited.