Ultra4 is some of the wildest off-road racing in the world, with the top-spec 4400 class having extremely loose regulations that allows competitors to build insanely fast, trail devouring trucks. In this class, there is no limit on tire size, engine or chassis design – the trucks just have meet the minimum safety requirements for the class.
Ultra4 4400 trucks serve as the top-class at the King of the Hammers off-road race, which is held every year in on Means Dry Lake in Johnson Valley, California. A mixture of rock crawling and high-speed desert racing, competitors must traverse a course with sharp, jagged rocky sections, high-speed open sections and jumps. The 4400 class is currently the largest class of vehicles at Ultra4 regional races and King of the Hammers, with 40 to 90 trucks usually entering each race.
The car obsessed folks over at Donut Media recently featured one of these Ultra4 4400 class trucks from King of the Hammers in its Bumper to Bumper video series, which explains all the various features of different vehicles. The Ultra4 truck in question is fielded in King of the Hammers by Tom Wayes and Icon Vehicle Dynamics, which is well-known purveyor of off-road suspension systems from trucks and SUVs.
Powering the Icon Vehicle Dynamics Ultra4 truck is an 800 hp 7.0-liter LS7 engine, but there aren’t too many other details on its exact specifications. Because the class is unlimited and teams are allowed to run whatever they want (within reason), it’s beneficial for teams to keep things like fuel tank capacities and other important statistics a secret.
You can learn more about this mad, 800 hp LS7 V8 powered Ultra4 racing truck in the video embedded above. If you want to watch King of the Hammers, you’ll have to tune in next year – this year’s edition of the race was just held from February 1st through to the 9th.