Building your own race vehicle is exciting! Read and print the rules and bulletins before building, modifying or while you’re preparing for tech and the race each year.
Rulebook and Resources
- Download the most current version of the rulebook, 2021-Ultra4-Rulebook-V5.1_0.
- Review revised 2022 UTV Class Designations.
- King of the Hammers requires SFI rated head and neck restraints for all classes. Confirm your gear is on the list of SFI approved devices.
Tech and Inspection
For specific rule or technical questions, please email Tech@KingoftheHammers.com. Please cite the rule in question with the page and item number from the rulebook.
Full and pre-tech is available by appointment only. Check with remote tech locations on time, availability and pricing (pricing is individual and may vary). Getting your vehicle teched ahead of time is a convenience for racers and is not mandatory.
We appreciate the shops that are King of the Hammers Certified Tech locations!