Rulebook

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

Please review the final class designation and rules below for the 2022 UTV class.

These rules will be added to the 2022 rulebook when updated later this year.

Downloadable PDF HERE

Stock Production UTV

  • Homologated Chassis with at least 250 Cars produced in Make/Model Year
  • 1000 cc Max Motor Size limited to Homologated OEM Motors
  • Aftermarket Turbos NOT Allowed
  • CCV Clutch or Gear driven transmission
  • 80” Wide Max
  • 33” Tire Max unless OEM Factory Equipped
  • No Portals
  • Must use stock pan
  • Must use stock suspension pickup points
    • Reinforcing allowed
    • No bypasses unless OEM Factory Equipped
    • Must run front body  and side plastics

Pro Modified UTV

  • Homologated Chassis with at least 250 Cars produced in Make/Model Year
  • 1000 cc Max Motor Size limited to Homologated OEM Motors
  • Aftermarket Turbos Allowed
  • CCV Clutch or Gear driven transmission
  • 80” Wide Max
  • 35” Tire Max unless OEM Factory Equipped
  • No Portals unless OEM Factory Equipped
  • Aftermarket Chassis Allowed
  • Must use stock suspension pickup points
    • Reinforcing allowed
    • Must run full front plastics

Open UTV

  • 1000 cc Max Motor Size limited to Homologated OEM Motors

 

Unlimited UTV

  • Unlimited Max Motor Size limited to Homologated OEM Motors
    • Promoters decision to mix with existing classes
      • In Ultra4 Events Unlimited UTV would be in 4400

ALL SAFETY RULES INCLUDED IN 2021 ULTRA4 RULEBOOK STILL APPLY

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 tech@ultra4racing.com

Click here for a direct download

ADDED 5.8.2021

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