ULTRA4 Rule Book       Description of Points   2021 Bulletin updated 2021.2

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.

Download the ULTRA4 Rule Book – Updated 12/22/20 for 2021 season

Quick note: We changed the way the rule book deals with changes this year. We got rid of the red color on changes because it was causing issues when people printed it on a black and white printer.
New format for changes in the 2021 book is: Strikethrough for deletions (same as past years) New text is underlined (no longer red)

Ultra4 Chassis & Tech Sheet can be viewed here.

Should you have specific technical questions, you must cite the section of the rule book to which your question pertains and email our tech inspector at [email protected]

Click here for a direct download

ADDED 5.8.2021

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