Building, modifying, or maintaining your own race vehicle is exciting. Read and print the Rulebook and reference materials before starting a project or when preparing for tech each year.
Rulebook and Resources
- 2023 Hammerking Productions Inc. Rulebook V5.3 12-1-22
- 2023 Hammerking Productions Inc. Desert Tech Cross-Reference Guide 1.12.2023
- USAC Tech Bulletin RE: 4500 Steering 11.29.22
- Hammerking Bulletin 2023-1 Rookie Numbers
- Hammerking Bulletin 2023-2 Winch Update (all classes) and Car Requirements (4400)
- Hammerking Bulletin 2023-3 Substitute Driver, Winch Clarification and Points Calculations
- Ultra4-Bulletin-2023_4-Final
- Rallysafe-KOH-install
Tech and Inspection
- How-to-Pass-Ultra4-Chassis-and-Tech-Inspection.
- Ultra4 Chassis and Tech Sheet used during tech inspections.
- Ultra4 UTV Chassis and Tech Sheet used during tech inspections.
- Remote Pre-Tech Locations.
- SFI rated head and neck restraints are required for all classes. View SFI approved devices.
Direct rule and tech questions to Tech@KingoftheHammers.com. Please cite the rule in question with the page and item number from the Rulebook when emailing.
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). Teching ahead of time is a convenience for competitors and is not mandatory.
We appreciate the King of the Hammers Certified Remote Tech locations!