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New Diesel Injectors 300,000 mile warranty.
Diesel Injectors
Duramax Performance Modules
Duramax Modules
Ford Powerstroke Performance Modules
Powerstroke Modules
Cummins Performance Modules
Ram/Cummins Modules
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About

Dr PerformanceRx started out in the small town of Harrison, Idaho in 1995. After moving to Weatherford, TX for a short time we now reside in Kellogg, and Coeur d'Alene, ID.  Since its inception, Dr PerformanceRx has developed over 40 different, highly specialized diesel performance products.  We continue to innovate and pursue performance perfection.

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