Garmon's Diesel Performance is now a full Service Diesel Transmission Shop. Providing transmission parts Built by us, tested by us and used by us!
Stop by and see us at the track. Come by and see our Cummins Powered Pro Street trucks and see why all the top trucks use Garmon's Diesel Performance!
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Welcome to Garmon's Diesel Performance.
Garmon's Diesel Performance strives to deliver the highest quality Diesel Transmissions and Performance Parts available anywhere!
New Support Forum available!
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Garmon Diesel Support Forum