Kibblewhite Precision Machining, Inc. (KPMI®) is a 80 year old valvetrain manufacturing company supplying the Motorsport Industry and select OEM’s. We stock and distribute over 3,000 items to our customers around the world. No other company in the world has our product coverage for the motorsport industry. You will not find any other company in the world with such an extensive product line solely dedicated to the motorsport industry.

KPMI® not only manufactures ready-made parts, we also provide contract manufacturing for OEM and other parties. Our expert services include engineering, prototyping, and limited or full production runs.




Mongoose distributes a variety of Kibblewhite parts including steel & titanium valves, spring kits, intake only kits, bronze valve guides, bronze and cast iron seats, valve seals, and more. Contact us if you’re needing to find the correct parts for your machine.