UTV Pro Stock PS900 - PS999
Stock production UTV. Vehicles built using a stock Turbo or NA UTV. Maximum engine size 2000cc N/A, 1000cc Turbo charged.
Stock production UTV. Vehicles built using a stock Turbo or NA UTV. Maximum engine size 2000cc N/A, 1000cc Turbo charged.
Last Updated April 10, 2024
DEFINITION
Single or two seat vehicles built using a production UTV. Any manufacturer UTV may be used providing the model used has been series produced in a minimum of 1000 units within a twelve (12) month period. Maximum engine size 2000cc N/A, 1000cc turbo charged. Stock production body parts required.
GENERAL REGULATIONS
Entrants in this class shall comply with all applicable general regulations.
TECHNICAL REGULATIONS
This class is a Stock Production class, and all components will be considered Stock Production unless unrestricted herein. If the rules herein don’t say that you can do it, you CAN’T do it and it will be deemed illegal. Manufacturers body, engine, transmission, chassis, and drive train components must be retained.
NOTE: The UTR abbreviations listed under this class (I.E. UTR1 HELMETS) refer to UTR cross reference listings in the front of this book. These UTR cross-referenced listings are part of the class rules. Where a conflict occurs between the UTR cross-referenced listing and a rule contained under this class, the rule contained under this class takes priority.
SAFETY EQUIPMENT
UTR1 HELMETS
UTR2 PROTECTIVE CLOTHING
UTR3 EYE PROTECTION and DENTURES
UTR4 HEAD AND NECK RESTRAINTS
UTR5 FIRST AID KIT
UTR6 EMERGENCY SIGNALING DEVICES
UTR7 HORNS
UTR8 REFLECTORS
UTR9 FIRE SUPPRESSION EQUIPMENT
UTR10 SURVIVAL SUPPLIES
SUSPENSION COMPONENTS
Must retain stock pivot points as delivered by the manufacturer. Suspension pivot points may be reinforced but must remain in stock location. All pivot points will be used as designed by the manufacturer. No pivot points may be added or removed.
Suspension components must remain stock as delivered by the manufacturer, material may be added for strengthening purposes only.
Ball joints may be of any manufacturer.
Sway Bars must remain stock as delivered by the manufacturer, or can be removed.
Sway bar links are open.
Aftermarket radius/tie rods may be used, stock length must be retained.
Stock track width must be retained, plus or minus two inches.
Maximum track width as measured outside of tire to outside of tire at ride height is eighty (80) inches.
Wheel bearings are open.
Axles/CV joints are open.
UTR11 SHOCK ABSORBERS and BUMP STOPS
Shocks may be of any manufacturer, but must mount in the stock location.
Limited to one shock per wheel in working condition at the start of the event. No external bypass shocks.
UTR12 SECONDARY SUSPENSION
Not allowed.
UTR13 WHEELS and TIRES
Wheel diameter is fifteen (15) inch maximum.
Maximum tire size is 35x12.5x15.
Wheel studs are open.
UTR14 FASTENERS
STEERING and BRAKE COMPONENTS
UTR15 STEERING
Steering box, knuckles, and spindles must remain stock as delivered by the manufacturer. No aftermarket.
Center steer allowed only on single seat vehicles.
Tie rods are open.
Steering wheel open.
UTR16 BRAKES
Must remain stock OEM brake calipers.
Rotors are open.
ELECTRICAL SYSTEM
UTR17 IGNITION
Must remain stock OEM coils, alternator, stator and voltage regulators.
UTR18 BATTERIES
All batteries must be securely mounted. Battery shut off switch is required.
UTR19 LIGHTS
All vehicles must have a minimum of two (2) taillights and two(2) brake lights. Tail and brake lights must be 3 inch in diameter. All UTV's must also have two (2) additional rear facing safety lights. One (1) solid amber, one(1) flashing amber, one(1) solid blue, and one(1) flashing blue. All safety lights must be LED with a minimum of 2000 lumens output. All safety lights must be wired directly to the battery switch. All lights must be mounted 48 inches from the ground minimum. Safety lights must be on at all times. Vehicles without working safety lights will not be allowed to leave the starting line or pass through a check point. All light subject to Unlimited Off-Road Racing approval.
UTR20 STARTERS
FUEL SYSTEM
UTR21 FUEL
Pump gas only - 93 octane maximum. No race fuel.
UTR22 FUEL TANKS
Stock tank in stock location or Fuel cell in any location.
UTR23 FUEL FILLERS LINES, VENTS, and CAPS
ENGINE, TRANSMISSION and DRIVELINES
UTR24 ENGINE and ENGINE DISPLACEMENT
Maximum engine displacement is 1000cc turbo charged, 2000cc N/A.
Engine must remain stock as delivered by the manufacturer.
No engine parts may be modified or replaced.
Air cleaners, air cleaner tubes are open.
Clutches must remain stock. Springs and weights are open.
Clutch housing cooling inlet and outlet tubes (snorkels) may be modified or replaced.
Production OEM differentials only.
No aftermarket sheaves, sliders or rollers.
Primary and secondary clutches must remain 100% stock.
Clutch ducting is open.
Fuel pumps, fuel regulators, fuel filters and fuel rails are open.
Fuel rails must be made of metal.
Engine must remain in stock location.
Stock ECU must be retained, tuning allowed.
Intake ducting is open.
Boost tube, intake tube and BOV must remain stock OEM.
Optional engine sealing will begin in Nevada, California and Arizona beginning Jan 1, 2024.
By January 1st 2025, engines must be sealed by an Unlimited Off-Road Racing approved engine sealer.
UTR25 ENGINE REPLACEMENT
UTR26 TRANSMISSION/DIFFERENTIAL
Transmission must remain stock as delivered by the manufacturer.
Bearings may be changed, but must be stock dimensions. No ceramic or hybrid bearings allowed.
Use of a retainer plate is allowed.
High gear spacers are allowed.
UTR27 THROTTLES
UTR28 EXHAUST
Must remain stock OEM header and muffler.
Tail pipe open.
UTR29 DRIVE SHAFTS
Must remain stock OEM.
UTR30 FLYWHEEL SHIELDS
UTR31 FLUID COOLERS
Additional coolers allowed. Additional radiator may be used, stock radiator in the stock location must be used.
UTR32 AUXILIARY EQUIPMENT
UTR33 SUPERCHARGERS and TURBOCHARGERS
Turbochargers and their components must remain stock as delivered by the manufacturer.
VEHICLE SAFETY EQUIPMENT
UTR34 ROLL CAGES
Aftermarket roll cage required. No stock cages.
A-pillar support tube mandatory.
UTR35 SAFETY HARNESS
UTR36 SAFETY NETS
UTR37 SEATING
Race seats only. All stock seats must be removed.
GENERAL VEHICLE COMPONENTS
UTR38 DRIVER'S COMPARTMENT
Any gauges, switches, GPS are allowed.
UTR39 DOORS AND LATCHES
Doors must be securely closed.
UTR40 FIREWALLS
UTR41 BALLAST
UTR42 WEIGHT
UTR43 FLOORBOARDS
UTR44 BUMPERS and HAZARDOUS PROTRUSIONS
Safe front and rear bumpers required. No shape corners or hazardous protrusions.
UTR45 MIRRORS
UTR46 SKID PLATES
Open
UTR47 STORAGE
UTR48 CHASSIS and BODY
Stock chassis as delivered by the manufacturer is required.
Two (2) or four (4) seat chassis are allowed. Additional tubes and gussets are allowed if approved by UNLTD tech before construction.
Stock grill, dash, hood, front fenders, rear fenders and bed must be used.
Minimal trimming allowed on bed for spare tire mount.
Roof must be covered with sheet metal .060 thick minimum.
UTR49 HOSES
UTR50 IDENTIFICATION MARKINGS
Unlimited Off-Road Racing will assign race numbers.
