Ultra4 is unlimited, 4 wheel-drive endurance racing. The marriage of Rock-sports and off-road racing yields an absolutely brutal challenge. From the trails of the Hammers, to the barren wasteland of Nevada, to the hills of Pennsylvania, Hammerking Productions expands across the nation. Hammerking presents Ultra4 racing. Unlimited 4-wheel drive endurance racing just got bigger!

KOH Qualifier: Best in the Desert '09 Vegas to Reno
1000 miles in a Rock Crawler! V2R the long way, Eleven teams stepped up to the Challenge, only four succeeded

Impossible GO: King of the Hammers '09
Stay tuned for exciting news about the future of Ultra4 and Hammerking's plans for a nationwide series!