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Kibblewhite Valvetrain

Kibblewhite Precision Machining (KPMI) manufactures valvetrain components for the powersports world, including valves, valve guides, and spring kits engineered as upgraded OEM replacements. Coverage spans Harley-Davidson, sport bikes, dirt bikes, ATVs, UTVs, cruisers, and watercraft, built to exceed OEM durability.

KPMI is a long-established valvetrain manufacturer supplying the motorsport industry and select OEMs worldwide. Riders and engine builders choose Kibblewhite for precision components that outlast stock parts, restore reliable valvetrain performance, and hold up to the stresses of high-performance and high-mileage engines.

Frequently asked questions

Are Kibblewhite valves a straight OEM replacement? Yes. The valves, guides and spring kits are built to stock dimensions for a listed application, then made from better materials so they last longer than the parts they replace.

Do I need new valve guides when I replace valves? On a high-mileage dirt bike or quad head, usually yes. Worn guides let the new valve move and seal poorly, so most engine builders replace guides and seals at the same time.

Do you offer free shipping in Canada? Yes, on orders over $279.99.

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