Dodge’s Jailbreak variant of the Hellcat Widebody Challenger offers a bevvy of customizable features. But say you want to run even further ahead of the pack? Hennessey’s warranty-backed HPE1000 performance upgrade is for you. Satisfaction guaranteed. 

The RAM TRX is a 10/10 truck. Hennessey’s warranty-guaranteed 1000 HP RAM TRX MAMMOTH performance upgrade kicks it up to 11

Hennessey’s supercharged Venom 775 performance upgrade for Ford’s F-150 transforms America’s best-selling pickup truck into a four-wheeled menace. 

The world’s most powerful truck driven…in England.

Testimonial Collections

Chevrolet Camaro ZL1

Ford Mustang

Chevrolet C7 Corvette

Ford Truck

Charlie Beis
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From the call, pick up, work performed, and car returned, this was an amazing company to deal with!! Will absolutely use them again!
Chris Smith
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The guys at Hennessey are top notch, their service and variety of work they do is tremendous. We have done several factory tours and days out at the drag strip and every time we go it puts a smile on our face. Aside from the national attention they get, the people behind the company are truly good people. When you mix good people with outstanding work you create something like this, a iconic brand.
Richard Honeycutt
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Very informative! Product is awesome and have a very good word of mouth!
Robert Mohead
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Simply the best aftermarket tuner shop out there. These guys are mechanical engineers hanging out in the garage. Have your car customized here and it will truly be a one of a kind collection piece. These guys are not putting out hotrods, they are creating works of art.
Arthur Fuller
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Great place to have a fast car built. The truck division is very impressive also with a line up of parts of and projects
Ant
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Awesome place for gearheads and Speedfreak and just the average car enthusiast. Beautiful complex and lots of cool cars.
Bill Eschenbach
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Great Warranty @ Hennessey Performance
emwhyte
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I am a repeat customer with an hpe 500 challenger r/t and a hpe 700 c7 corvette. The folks at HPE do great work, but are kinda slow. Be prepared to give up your car for 1-2 months while they tune it.
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