Ultra4 Rulebook

The online Rulebook currently reflects the 2026 Ultra4 Rulebook and is being updated for 2027.

Until that update is complete, use the downloadable 2027 Ultra4 Rulebook PDF as the current rulebook of record.

Download the 2027 Rulebook

Table of Contents

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INTRODUCTION

Copyright
Introduction / Overview
Applicability
Participants
Equipment
Document Conventions
Precedence
Terms / Disclaimer / Liability

 

TECHNICAL RULES

Technical Inspection & Impound

COMMON VEHICLE REQUIREMENTS

Serviceability
Safety Equipment
Vehicle Identification
General Vehicle Components
Roll Cages
Engine
Transmission
Transfer Case
Driveshafts
Steering
Suspension
Brakes
Controls
Fuel System
Fasteners
Electrical System
Wheels & Tires
Vehicle Weight

CLASSES

4600 Stock Class
4500 Modified Class
4800 Legends Class
4400 Unlimited Class
4900 UTV Class

 

17 & UNDER

Youth Racing League

EVENT RULES

Pit Support Vehicles
Event Officials
Event Participants
Event Course
Series Points & Championships
Infractions & Penalties
Protests & Grievances
Competitor Board

 

REFERENCE

Appendix A: Glossary
Appendix B: Seatbelt Installation Guide

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