
Fleece Performance
If you’ve spent any time in the diesel industry, you’ve likely heard a turbo referred to as a “Cheetah.” Over the past decade, the name Fleece Performance has become synonymous with high-performance diesel upgrades. About Fleece Performance Founded by brothers Brayden and Chase Fleece, this innovative company started in a modest 3,200 square-foot pole barn in rural west-central Indiana. Through their passion for wrenching and creating big horsepower with Duramax and Cummins engines, they quickly established themselves at the forefront of common rail technology within just five years. Notable Achievements TurboBrake: An electronic exhaust brake that has set new standards in the industry. Factory Turbo Upgrades: Enhancements specifically for the LLY Duramax model. Innovative Products: The AlliLocker and TapShifter, both breakthrough products that continue to meet high demand. Expert Services: Exceptional EFI Live tuning, engine builds, transmission upgrades, and fuel system impro... View Our Fleece Performance Products...