Building your own ULTRA4 race car or Smittybilt Every Man Challenge Stock or Modified Stock car? Find out all the rules before you start your build. All safety rules must be followed by all classes.
For class specific rules for Stock and Modified Stock see sections 6.3 and 6.4
UTV Drivers should reference ISXSA Rules that can be found here: ISXSA Rules
If your browser is not compatible with the PDF viewer below and you are unable to view the ULTRA4 (4400,4500,4600)Rulebook below, you can download the ULTRA4 RuleBook here .
Download the document “How to pass Ultra4 Chassis and Tech Inspection”
2013 Ultra4 Chassis & Tech Sheet can be viewed here.
Should you have specific technical questions please feel free to email our tech inspector at tech@ultra4racing.com
Adobe Acrobat Reader is required to view the Rulebook PDF file. This is a free program available from the Adobe web site. Follow the download directions on the Adobe web site to get your copy of Adobe Acrobat Reader. 