About Us

ULTRA4 Racing is the official web site of Hammerking Productions. The founders of Hammerking are the force behind the toughest one-day off-road race on the planet: King of The Hammers. King of The Hammers takes place each year in February, on public lands in Johnson Valley, CA.

In just 10 short years, King of The Hammers has become the largest off road race in North America.  The event has evolved from 12 teams racing for a case of beer to more than 500 teams competing in front of 50,000 fans in a weeklong off road motorsports festival. Considered by many to be a Burning Man for gear heads, fans travel from all over the world to spend one week each February on a dry lake bed in Johnson Valley, CA.

Due to the incredible success of King of The Hammers, a new breed of true unlimited motorsports has emerged called ULTRARacing. ULTRA4 combines high-speed off-road racing and rock crawling, and is one of the fastest growing motorsports in the world. The ULTRA4 Racing series starts each season with King of The Hammers and travels across the US for 6 regional races and finishes each year in an epic battle for a National champion in Reno, NV.

In addition to these races, Hammerking has established a racing class known as the  ULTRA4 class. The defining characteristic of this class is that all cars must be capable of 4-wheel drive. Beyond that, the class is unlimited. These cars come in all shapes and sizes and are capable of speeds over 100+ MPH and still contain gear ratios as low as 100 to 1 for technical rock crawling.

To give these cars and their drivers a chance to showcase their unique capabilities, Hammerking has formed the ULTRA4 Racing series. The series challenges drivers to compete in a wide variety of terrain from endurance desert racing to competition-style rock crawls to short course racing.  Hammerking currently produces 8 races in the series.  The races take place on both public lands and in private motorsports parks across the country.

Hammerking Productions has also produced 9 full-length feature films chronicling the first 10 King of the Hammers races. These award winning movies have helped shine a spotlight on this new form of racing throughout the world.

If you would like to know more about Hammerking, ULTRA4, the races produced and/or the movies created, please visit our Contact page and feel free to reach out to the person most suited to assist you with your inquiry.