About XHP
About X-treme Hummer Performance
X-treme Hummer Performance Specializes in High Performance Duramax Powered Hummer H1’s and HMMWV® vehicles. Our Duramax Conversions are based on 15 plus years of Duramax performance experience and focus on optimizing the power and efficiency of the Duramax/Allison drivetrain. Our Hummer conversions outperform others and incorporate features that no other company can offer. Our in-house engineering and design staff produce components that no one else offers.
The H1 and HMMWV® vehicles are very capable off-road vehicles but are very under-powered and although the Duramax Conversion is the ideal solution for more power, many of the components of these vehicles were not designed to accommodate the significant increase in power and speed that the Duramax conversion offers. We have developed solutions for all of these shortcomings, from Big Brake kits and Custom Coilover suspensions, to Massive Intercooler and Radiator systems. Our Hummers don’t just advertise performance, they produce it!
Whether you just want to improve your current H1 Hummer’s ride and handling or turn it into a 1000hp Twin Turbo Monster, we can engineer the solutions you need!
Our Mission
X-treme Hummer Performance focuses on optimizing the performance of the H1 Hummer and Military HMMWV® vehicles. These vehicles have world renown off-road capability, but significantly lack the performance needed to keep up with today’s technology. Through 15 years of experience with the Duramax/Allison drivetrain we have created 600+ hp Hummers and quickly identified the weak points in the driveline, suspension and braking systems.
Using the latest Engineering tools and equipment we Design, Engineer and Fabricate custom components that enable the H1 and HMMWV® vehicles to perform on a level that compete with today’s high performance off-road vehicles. Using the best components and hardware keep our products on par with the Level of quality and performance expected of a Luxury Off-road vehicle.
X-treme Hummer Performance – Hummers that Perform!!!