Building your own ULTRA4, Stock Modified, Stock, Legends, or UTV? Find out all the rules before you start your build. All safety rules must be followed by all classes.
Stock – 4600 , Modified – 4600 , Legends – 4800 and Spec – 47000 Classes: see sections 6.3 and 6.4 and 6.5 in the ULTRA4 Rule Book
UTV Drivers: Classes have been simplified to Pro and Sportsman. Pros will be racing for a purse and Sportsmen will be racing for a trophy. Please consult the ULTRA4 2014 Rulebook section 6.6 for KOH UTV rules for KOH UTV Race.
Download the document “How to pass Ultra4 Chassis and Tech Inspection”
Ultra4 Chassis & Tech Sheet can be viewed here.
Should you have specific technical questions, please email our tech inspector at [email protected]