Before you gear up for the thrilling racing action, take a moment to familiarize yourself with the necessary requirements and join us in promoting the spirit of competitive motorsports in the best possible way!

King of the Kastle & Rage in the Sage Class Rules

UTV Classes, Limited to 50 entries

  • Sportsman 1000cc

  • Sportsman 1000cc Turbo
  • Sportsman Women 1000cc
  • Pro Stock 1000cc NA
  • Pro Stock 1000cc Turbo
  • Pro Mod 1000cc NA
  • Pro Mod 1000cc Turbo
  • Pro Unlimited 2000cc
  • Experimental / Electric / Hybrid

Class Definitions

Sportsman 1000, Sportsman 1000 Turbo & Sportsman Women

SPORTSMAN UTV CLASS DEFINITION: This class was designed to capture the UTVs that do not fit the requirements to be in another class (i.e., stock UTV with long travel). The Sportsman class races will typically be shorter than other classes with trophies only, no payouts. The minimum age for driver in any UTV class is 16 years old, must be 16 by the date of the event. Co-driver minimum age is 14. A minor MUST have a signed waiver by a parent or legal guardian. Minor drivers must always have a legal age (18) co driver (excluding RS1’s)

Pro Stock 1000 NA & Pro Stock 1000 Turbo

The Pro Stock NA/Turbo Production Class vehicles are built using production UTV’s, manufactured by registered companies like Polaris, Can-Am, Arctic Cat and Yamaha that issue Vin #’s. This is a stock production-based class, and all components will be considered stock unless stated within these class rules. THESE CLASSES ARE FOR AFTERMARKET PARTS ADDED UTVs WITH THE EXCEPTION OF SAFETY DEVICES (CAGES, BUMPERS, NETS, SEATS,)

UTV’s must have a minimum of 2 seats (except the RS1). OEM engines
must be used. The maximum engine size is 1000cc. Aftermarket parts
are allowed, but stock engines, from intake throttle body to edge of
exhaust flange must be used. All OEM engine electronics must be used;
ECM’s may be reflashed. Must use stock concept transmission and
differentials. Stock frame dimensions and all stock suspension
mounting points must be retained. Suspension must remain stock
width and length but upgraded suspension and shocks are allowed.
Shocks may be replaced, but stock shocks mounting points must be
used. Must use all stock body components (hood, grill, front, and rear
fenders etc..). The minimum age for a driver in any UTV class is 16
years old, must be 16 by the date of the event. Co-driver minimum age
is 14. A minor MUST have a signed waiver by a parent or legal guardian. Minor drivers must always have a legal age (18) co driver (excluding RS1’s) Fuel cells in the Pro Stock classes must not exceed 15% of the original stock fuel tank size. NO Full chassis-built cars in the Pro stock class. Must retain at least 50% of the original frame.

The point of this class is to remain as close to stock as possible.
Depending on set up, you may be bumped to the Pro Modified class or
Sportsman class. This is now a Pro class with trophies and cash payout for individual races.

Pro Mod 1000 NA & Pro Mod 1000 Turbo

The Pro Modified NA/Turbo class vehicles are built using production UTV’s, manufactured by registered companies like Polaris, Can-Am, Arctic Cat and Yamaha that issues Vin #’s.

UTV’s must have a minimum of 2 seats (except the RS1). OEM engines
must be used. All OEM engine electronics must be used. ECM’s may be
flashed. No aftermarket ECMs are allowed. Aftermarket turbos allowed
if originally OEM equipped. The maximum engine size is 1000cc. Must
use stock concept transmission and differentials. Long travel is allowed
with a max width is 80”, measured outside of tire to outside of tire at
ride height. The wheelbase must not exceed 8” over the stock
dimension and can only be achieved with the suspension. Stock
suspension mounting point must be utilized. Frames cannot be
shortened or lengthened. Must use hood, grill, front, and rear fenders
from the UTV. The minimum age for driver in any UTV Pro class is 16
years old, must be 16 by the date of the event. Co-driver minimum age
is 14. A minor MUST have a signed waiver by a parent or legal guardian.

Minor drivers must always have a legal age (18) co driver (excluding
RS1’s) The New Maverick R will race in the Pro Modified Turbo Class, and not qualify for the Pro Stock classes.

Pro Unlimited

The Unlimited PRO Class vehicles are built using production UTV’s, manufactured by registered companies like Polaris, Can-Am, Arctic Cat and Yamaha that issues Vin #’s. UTV’s must have a minimum
of 2 seats (except the RS1) Engine can be any OEM make of 2000cc MAX. NO Automobile engines. Any engine electronics can be used. ECMs can be reflashed. Any transmission. Any Aftermarket parts are allowed including add on Turbos, superchargers, ECM’s. Any Suspension can be used including solid rear axle MAX width 80” and wheelbase of 120” Frames can be shortened or lengthened. The
body must resemble the OEM spirit of the vehicle. Stock body components (hood, grill, front, and rear fenders etc..) are required. Pro Classes do have a points championship, a points championship fund, and an individual race purse. The minimum age for driver in any UTV class is 16 years old, must be 16 by the date of the event. Co-driver minimum age is 14. A minor MUST have a signed waiver by a parent or legal guardian. Minor drivers must always have a legal age (18) co driver (excluding RS1’s)

The new Polaris Pro R will race in the pro unlimited class.
The biggest difference between Pro Stock to Pro Modified / PRO Unlimited are as follows.

Payouts will be larger in Pro Modified / Pro Unlimited.

Laps/miles will be longer.

Full tube chassis will be bumped to the Pro UTV classes.

Maverick R will race in Pro Modified Turbo

Polaris Pro R will race in Pro Unlimited

Experimental / Electric / Hybrid

This is an experimental class open to all electric / hybrid powered SxS based vehicles. Drivetrain and suspension are open. All safety rules apply.

Car Class Numbers

A RACER DOES NOT OWN A RACE VEHICLE NUMBER IN King of the Kastle (KOTK). If a participant has a request for a certain number in a certain class, KOTK will do its best to accommodate that request. If the race vehicle is sold, the number does not go with the race vehicle unless approved by KOTK. Vehicle numbers, once assigned to you, must race at least one KOTK event during the season to retain the number. Sorry, we are changing the class numbers again, to become constant with other sanctioning bodies.

Sportsman 1000CC UTVWHITEBLACK5900-5999
Sportsman 1000cc TurboWHITEBLACK5800-5899
Sportsman Women 1000ccWHITEBLACK5900-5999
Pro Stock 1000cc NAWHITERED3900-3949
Pro Stock 1000cc TurboWHITERED3950-3999
Pro Mod 1000cc NAWHITERED1900-1999
Pro Mod 1000cc TurboWHITERED2900-2999
Experimental / Electric / HybridWHITEGREEN




All vehicles in competition must display the official KOTK decal on both sides of the vehicle. All vehicles in competition must be identified with the correct class vehicle numbers and be displayed in the proper locations as prescribed herein.

Sportsman black background w/white numbers. Pros red background with white numbers There must be a gap of at least 1 1⁄4” between the black line and the numbers. Any number location that is deemed by KOTK to be too hard to read will have to be changed prior to vehicle competing in the event. Please make numbers easy to see. Do not blend numbers into design on vehicle. All vehicles in competition must have identification numbers in the following locations and sizes:

*Minimum 6 inches high with 1-inch-wide stroke on each side of
vehicle in line with the occupants

*Minimum 6 inches high with 1-inch-wide stroke on the rear of vehicle
and is plainly visible from the rear.

*Minimum 4 inches high located on the front of vehicle and is plainly visible from the front of the vehicle. THIS IS THE MOST IMPORTANT NUMBER ON THE CAR FOR THE SCORING PEOPLE!

Note: KOTK assumes no responsibility for scoring vehicles with unrecognizable numbers. It is the vehicle driver’s responsibility to keep numbers recognizable. YOU will not start the race unless your number plate adheres to these rules

Requirements for all Classes

Please review all the class rules: All Cars require a USFS approved spark arrestors, Seat belts, Window nets, Rear lights wired directly &  Numbers. A reminder this is a NO Chase Cars – meaning no chase or support vehicles on the course – only at the pits. A reminder that ALL race vehicles must have a current OR ATV Permit – they are only $10 – makes the BLM happy.


  • If anyone verbally or physically abuses the KOTK support staff, you and your team will be DQed and Not Welcome Back.
  • Helmets: Full face helmets are mandatory. Helmets must be
    approved by one of the following with the appropriate approval decal attached; Snell SA2015 or SAH2015 / SA2020. Straps must have D-ring fasteners only. No snaps or Velcro will be permitted. Helmets must be free of defects; NO DAMAGE and in “like New” condition; no scratches or worn-out padding.
  • PROTECTIVE CLOTHING: One-piece fire suits are mandatory. Two-piece suits are not permitted. The suits must cover from the neck to the ankles and to the wrists. The suits must be in “Like New” condition. No holes, rips, tears or be worn thin. The suits must also be free from any petroleum-based contaminants. All suits must be manufactured from fire resistant material and shall bear a minimum of an SFI 3.2A/5 or higher manufacturer’s certification label. Fire retardant gloves and footwear rated to the SFI 3.3 standard are very highly recommended. KOTK also highly recommends that each fire suit be labeled on the upper right chest with the entrant’s full name, blood type, allergies, or other important medical information. KOTK strongly recommends the use of either a fire-retardant balaclava rated to the SFI 3.3 specification or a helmet skirt rated to the SFI 3.3/5 specification.
  • Undergarments: The use of petroleum based and other synthetic blends of undergarments such as the athletic or compression style close-fit garments (commonly used for the cooling, moisture wicking, and quick drying features) are not permitted. Synthetic fibers such as nylon, elastane, and polyester melt when ignited and for this reason they will not be permitted. KOTK strongly recommends- the use of a fire-retardant long sleeve  tops, and long bottom undergarments as well as ,fire retardant socks rated to the SFI 3.3 specification.
  • EYE PROTECTION: Shatter resistant eye protection is required for all competitors in a KOTK Race event.
  • NECK RESTRAINTS: Required with an SFI 38.1 rating. No exceptions.
  • FIRST AID KIT: The first aid kit must be easily accessible within the occupant’s area without having to remove any body panels or equipment and must contain at least the following items:
    • Two-4” Bandage Compress
    • Two-2” Bandage Compress
    • One-Triangular Bandage
    • Eight-2”x 3″ Adhesive Bandages
    • Four-1” x 3.375″ Adhesive Bandages
    • Four- Antiseptic (Methylate, etc.)
    • Two- Pairs of Latex Gloves.
    • The following items are recommended in addition to the required items: One-Eye Dressing Packet, One-Ace Bandage, One-Wire Splint (Compact), One-CPR Face Mask.
  • SURVIVAL SUPPLIES: All vehicles must carry at least one day of survival supplies and one quart of water per occupant or rider. KOTK highly recommends that additional water be carried for each occupant during the hotter months.
  • BREAKDOWN SAFETY DEVICES: Reflective devices must be at least 12 inches high and 12 inches long and be free standing (like trucker’s breakdown triangles). For night races, two large glow sticks or two red reflective devices must be carried in the vehicle. Flares are not permitted. Good Samaritan points/time will be given for those who stop and help another racer in need.
  • HORNS: All vehicles must have a loud sounding horn. The horn must be very audible from 100 feet in front of the vehicle. Sirens are permitted, in addition to a horn, during the actual racing portion of the event.
  • REFLECTORS: All vehicles must have two 2-inch-wide x 8-inch-long red reflective tapes or two 2-inch round red reflectors (DOT stock taillight lenses satisfy this requirement) attached to the rearmost- portion of vehicle at each corner. The reflective tape or reflectors must be clearly visible from the rear.
  • FIRE EXTINGUISHERS: Each vehicle must carry Two portable UL approved Fire Extinguishers ABC-class dry chemical type or equivalent Halon, AFFF Foam, Novec 1230, FE-36 fire extinguishers. Fire extinguishers must have a gauge and be fully charged. One must be easily accessible from the inside of the vehicle (minimum 2.5-lb). An additional minimum 5-lb. ABC class, dry chemical fire extinguisher or foam equivalent must be mounted on the exterior of the vehicle. The mounting must be in such a manner as to prevent damage to the fire extinguisher during rollover and must be marked in such a manner as to allowing persons not familiar with vehicle to easily find fire extinguisher. Portable and on-board fire extinguishers must have a current (less than one year old) fire marshal’s seal and attached label. All vehicles not using a fuel cell must use a fire ball type system or a fire suppression type system. Fire ball systems must be mounted in a location near the engine area. All other fire suppression such as Eliminator and such are at the racers direction, and not mandatory or recommended.
  • PITS: All vehicles in the pits must comply with the 25mph speed limit. Time penalties or disqualification will be implemented if the speed limit is not adhered to. No loose pets or unattended children allowed. No drinking of alcohol during a KOTK sanctioned event. All Fueling must have a manned fire extinguisher, NO EXCEPTIONS! Fueling must take place on fueling mats. All repairs must be performed in your area and not penetrate Pit Lane. Be courteous to others in the spirit of friendly competition. All Fuelers must be wearing a fire suit or Fuel Apron and wearing a full- face helmet with Head Sock Balaclava SFI 3.3 Fire Retardant FR Single Layer Hood. Helmets can be outdated.
  • SUSPENSION COMPONENTS: SHOCK ABSORBERS There must be at least one shock absorber per wheel in working condition at the start of the race. Shocks must be mounted in the original position from the factory. Pro Modified and Pro Unlimited UTV Class may change the shock mount locations. UTV PRO STOCK; stock rubber bump stops only – no secondary suspension.
  • UTV PRO/UNLIMITED : BUMP STOPS/ SECONDARY SUSPENSION: All bump stops are allowed. Secondary suspension includes Movable bump stops when they contact the suspension unit more than 4 inches before the end of the wheels upwards travel.
  • WHEELS & TIRES: Snap-on hubcaps or Snap-on wheel covers of any type are not permitted. Tires will be visually checked for condition and must be considered reasonably safe by KOTK prior to competing. Pro Stock UTV Maximum tire size is 33” and labeled with size on side of tire. Maximum wheel size is 15”. All wheels will be required to have the race vehicle number marked near the valve stem including spare wheels. Pro Modified / Pro Unlimited UTV: Maximum tire size of 35×10.50×15. Tire must be marketed as a 35” and labeled with size on side of tire. Maximum wheel size is 15”. All wheels will be required to have the race vehicle number marked near the valve stem including spare wheels. Can Am Maverick R may run 16” wheels / tires.
  • FASTENERS: It is recommended that all component parts on the vehicle’s suspension system, chassis and running gear be secured with S.A.E. Grade 8 or better nuts and bolts. Bolts must be secured with either lock nuts, lock washers, cotter pins or safety wire and have at least one full thread showing through the nut. Zeus fittings can fasten body panels as well as roof panels.
  • STEERING & BRAKE COMPONENTS: All steering components must be in good condition and in proper working order. Drag link and tie rod ends must be secured with a cotter pin in each one. KOTK UTV Tech must consider the steering reasonably safe before vehicle is permitted to compete.
  • BRAKES: Brakes must be in a safe working condition and be able to apply adequate force to lock up all four tires. Brakes must be in a safe operating condition during the entire event. If brakesystem problems do occur during the event they must be repaired before in class.
  • IGNITION: Each vehicle must have a positive action on/off switch in good working order. The switch must be labeled “ignition” on/off and be located within easy reach of the driver and from the outside of vehicle. All electric fuel pumps with independent switches must be labeled “fuel” on/off and be within easy reach of driver and from outside of vehicle. It is highly recommended that electric fuel pumps are not independently switched.
  • BATTERIES: Batteries must be securely mounted with metal-to metal tie downs. All flooded cell batteries must be fully enclosed including the sides and bottom. Enclosure must be able to contain the quantity of acid contained in the battery if inverted. Batteries shall not be in the driver’s compartment. Batteries will be considered as being in the driver’s compartment if there is no firewall between the battery and the driver.
  • LIGHTS: Rear Facing Lights: Vehicles must have two (2) always working brake lights. Two (2) red taillights and one (1) steady burn amber light are required to be wired directly to the battery cut-off switch. These lights must operate when the battery switch is placed in the “on” position. An inline fuse or connector is allowed. MANDATORY Blue Strobe light required on all UTVs for safety. Approved lights must be a minimum of 3”x6” with a minimum of 12 LED’s and a minimum of 16 watts. Must be equivalent to either KC#1313 or ATCSAFETY-B. If the blue strobe light is not either of the listed lights, the approval of the blue flashing strobe light is at the discretion of the UTV technical inspector or race director. This light should be wired to the ignition switch, so it only operates when the ignition is turned on. The purpose of this light is to help other competitors recognize that they are approaching a UTV. Contact All Terrain Concepts at 877-231-1859 or Contact KC HiLites 888-689-5955. All lights must be mounted in a manner that is clearly visible from the
    rear of the vehicle without obstruction.
  • FUEL: Any of the following commercially available fuels may be used
    • A. Service station pump gasoline (the type normally used in passenger vehicles for highway use, this also includes E85.)
    • B. Racing gasoline as manufactured.
    • C. Commercial aviation gas
    • No alcohol, NOS, or nitromethane is permitted. Commercially produced nationally advertised fuel additives may be used.
  • FUEL TANKS: Safety fuel cells are not required in all classes. You may now run in the pro class without a fuel cell. To run the Pro UTV class you must have a type of fire suppression system installed. A fireball will count as an acceptable fire suppression  system. Auxiliary fuel tanks may be added in all classes except those classes whose class rules do not allow auxiliary fuel tanks. Auxiliary fuel tanks must be safety fuel cells. Alternative fuels (propane or natural gas) must use an approved fuel cell as determined by DOT standards and with the approval of KOTK. Alternative fueled vehicles may not use auxiliary fuel cells. All fuel tanks must be securely mounted. Fuel tank must be filled from and vented to the outside of the vehicle. There must be a substantial cross member and firewall between the fuel tank
    and the occupants. No GI-cans or fuel containers similar in construction or purpose will be permitted in or on any vehicle during the race. Time penalty or disqualification will result. Safety fuel cells shall consist of a bladder enclosed in a smooth skinned container. The container shall be constructed of 20ga. steel, 0.060-inch aluminum or 0.125-inch marlex. Magnesium is strictly prohibited. Containers must be securely attached to vehicles with bolts or steel straps. All fittings must be built into the skin and bonded to the skin as an integral part of the tank or mechanically sealed by a ring and counter ring system by either flat joint or an “O” ring. Internal baffling is mandatory in all fuel cells. Bladder construction shall be of nylon or Dacron woven fabric impregnated and coated with a fuel resistant elastomer. Rotary molded polymer cells are acceptable. The physical properties minimum standards are in accordance with Table 1.
    • General Information
    • Test Type
    • Minimum Standard
    • Test Specification
    • Tensile Strength 450 lbs.
    • Spec CCC-T-1916 Method 5102
    • Tear Strength 50 lbs.
    • Spec CC-T-1916 Method 5134
    • Puncture Test 175 lbs.
    • Spec MIL-T-6396 Article 4.5.17
  • FUEL FILLER, VENTS & CAPS: Fuel filler lines and positive-locking non-vented fuel filler caps (Monza/flip-type caps are strictly forbidden) must be located and secured in such a manner as to prevent being knocked off or open during movement, rollover, or accidental impact. Design and installation must be in such a manner to prevent fuel escaping from pickups, lines, fillers and- breather vents if vehicle is partially or totally
    inverted. Fuel breather lines must have a rollover check valve
    incorporated in the fuel cell along with a secondary external
    discriminator valve which should be mounted visible and at no more than a 15-degree angle. The vent line must extend to the highest point of the roll cage nearest the fuel cell, across the width of the vehicle, and down to below the belly pan of the vehicle or 3 inches below the fuel cell, whichever is lower.
  • OPTIONAL PLACEMENT: The vent line may be wrapped one full loop around the outside of the fuel cell near the top of the fuel cell and then down below the vehicle 3 inches below the lowest point of the fuel cell. Where the vent line attaches to the fuel cell there must be a loop above the fuel cell that extends 4 inches higher than the top of the fuel cell. The breather line must be vented outside of driver’s compartment and be directed away from the engine and exhaust system.
    • All fuel fillers attached to the frame or body panel must use a flexible coupling to the tank. All fuel fillers must be surrounded by a boot or splashguard (body panel is acceptable as a splashguard if sealed). Boot or splashguard must direct fuel spillage to outside of vehicle and away from driver’s compartment, engine, and exhaust. A fuel filler rollover- check-valve must be incorporated into all fuel cells. It is highly recommended that all detachable fuel filler caps have a flexible strap or chain attached between it and the frame of the vehicle.
    • All competitors should review Race Fuel Safety: Because of the recent flash fires after rollovers. Review the fuel rail retaining system on your motors. We suggest that you also interlock your fuel pumps to disable them with the loss of oil pressure, check with your engine builder. This is for your safety!!!
  • FUEL VENT LINES: These lines must be routed so that the line
    runs to all external fuel cell locations, i.e., top – left side – front – right side – back – bottom. This will limit fuel spills when the race vehicle is “Parked” in a position that tips the fuel cell. This is in addition to the rollover flapper/check
    • All UTVs must be self-starting by use of an onboard electric starter.
  • ENGINE DISPLACEMENT: Where applicable engine displacement must adhere to class rules. Engine displacement may be checked by KOTK UTV Tech.
  • ENGINE REPLACEMENT: Entrants may replace a complete engine during an event; however, the entrant must notify a KOTK official that the engine is being replaced. The engine may only be replaced at an official designated pit.
  • TRANSMISSION: Every vehicle must have a functional reverse gear. Four-wheel drive vehicles must be capable of being driven through all wheels.
  • THROTTLES: Every vehicle with a foot throttle must have two return springs, with a minimum of a 2-lb. pull, attached to the carburetor. Fuel injected vehicles are exempt from having two return springs. Computer controlled throttles are exempt from having two return springs but must maintain the stock system. A stop or override system must be used to keep linkage from passing over center and sticking in an open position. A hand throttle may be used if physical- limitations necessitate use of such device. The hand throttle must follow the same guidelines as a foot throttle and must be deemed safe and approved by KOTK.
  • EXHAUST: Forestry approved spark arrestors or approved mufflers are required on ALL VEHICLES. Exhaust system design and installation must be directed rearward out of the body and away from the driver and co-driver, fuel cells and tires. The exhaust must be placed in such a manner as to minimize the production of dust.
  • FLUID COOLERS: Oil coolers and radiators located ahead of the driver and co-driver or in the passenger compartment must have a shroud that will prevent liquids from blowing back or leaking onto the driver and/or co-driver in the event of a rupture or leakage. All hoses running through the passenger compartment must be shielded. Steel braided hoses do not constitute a shield.
  • AUXILIARY EQUIPMENT: All UTVs must start race with a complete functional electrical system. TURBOCHARGERS & SUPERCHARGERS Stock Turbochargers/Superchargers from the factory OEM (year, make, model) must be used. ECM Flashes are allowed. Non-compliant cars are considered  PROUnlimited Class. Turbocharges and Superchargers only permitted on gasoline-powered vehicles in classes listed.
  • ROLL CAGES: ALL vehicles must have an approved Roll cage to compete in a KOTK sanctioned event. You must present a safe vehicle for pre-race tech inspection. You must maintain your safety equipment including the roll cage integrity. KOTK reserves the right to not allow any safety cage design that, in the view of the tech inspector, is not fit for competition. You, as the competitor, are ultimately responsible for your own vehicle’s safety features with respect to the design, quality of  execution, maintenance, and repair of the roll cage structure. All vehicles in competition are recommended to be equipped with a roll
    cage based on seamless mild steel/4130 chrome molly steel tubing. Minimum design and tubing size for roll cage structure is in accordance with Table 2.
    • Table 2. Minimum Tubing Dimension
    • Note: See manufacturer’s’ reference charts for alloy steel tubing equivalent strengths. No aluminum or other non ferrous materials are permitted.
  • MATERIAL: Roll cage construction material may be crew, dom, whr, wcr mild carbon steel or 4130 chromoly. 4130 chromoly is highly recommended for all roll cage construction. Stress relieves all welded intersections by flame annealing. All welds must be of high quality and craftsmanship with good penetration and with no undercutting of parent material. Oxy acetylene brazing on roll cage is strictly forbidden.
  • ROLL CAGE DESIGN: All roll cages must be designed and constructed with one front vertical hoop, one rear vertical hoop, two interconnecting top bars, two rear down braces, one diagonal brace and all- necessary gussets. The two top interconnecting bars must be placed as far to the outside of the top part of the front and rear hoops as possible. Rear down braces and diagonal brace must angle a minimum of 30 degrees from vertical. At the bottom of the diagonal brace there must be a cross member of the same tubing material and dimensions as the hoop. All roll cage components (hoops, braces, gussets, etc.) must have a minimum of 3- inch clearance from the component to the vehicle occupant’s helmets when occupants are seated in their normal riding positions. All portions of the roll bar or bracing that might encounter the vehicle occupant’s helmets must be padded. All portions of the roll bar or bracing that might encounter the vehicle occupant’s helmets must be padded. Roll cages must be securely mounted to the frame or body. All intersecting points must be gusseted and braced. Cab or body mounted roll cages must be bolted through the body structure and be attached by use of a minimum two 0.1875-inch-thick double plates (one on each side of body structure). Bolts and nuts must be at least 0.375-inch- diameter SAE. Grade 8 or equivalent aircraft quality. Welding of cab or body mounted roll cages to body structure is strictly prohibited. Roll cage terminal ends must be attached to a frame or body member that will support maximum impact and not shear or allow more than 1.5 inches of movement in the cage terminal end. Intrusion Bars All utvs must have intrusion bars in the front windshield area. Intrusion bars can be configured in a single vertical bar, inverted V or V shape. The intrusion bar must be a minimum diameter of 1.5” OD with a minimum thickness of 0.120” wall for Seamless Mild steel 0.095” for 4130 Chrome Moly tubing. The maximum Horizontal opening can be no larger than 30” at the widest point. This will be mandatory by the Frontier 500 race in 2024. All UTVs must have at least one side bar on each side of vehicle that will protect occupants from side impact. These side bars must be 1.5”x .120. The side bars must be as close to parallel to the ground as possible, be located to provide maximum protection to the occupants, and be securely welded or hinged to the front and rear hoops. Gussets constructed of 0.125-inch x 3-inch x 3-inch flat-plate or split, formed, and welded corner- tubing, or tubing-gussets made of the same material and thickness as the roll cage may be used. Gussets must be installed at all major intersections, including diagonal and rear down braces, where single weld fractures can affect occupants’ safety.
    • Under 2000 lbs. 1.5″ x 0.95″
    • 2001 to 2500 lbs. 1.5″ x .120″
    • 2501 to 3000 lbs. 1.75″ x .095″
  • SAFETY HARNESS: All vehicles must have a minimum of five-point harnesses consisting of a lap belt, anti-sub strap belt, and two shoulder harnesses with metal to metal “latch and link” or “cam lock” buckling system connectors at each point for every occupant in the race vehicle. No “Y” shoulder belts are permitted. No push button type releases will be permitted. The harness system shall bear the SFI Foundation’s 16.1 or 16.5 manufacturer’s certification label on each webbing component. Harnesses utilizing a cam lock buckling mechanism shall be regularly serviced and remain in proper working order. Cam lock style harness determined by KOTK to be improperly maintained or not in properworking order will not be allowed for use in competition. Two-inch all over safety harnesses (complete 2-inch all over webbing) will be permitted by KOTK only if bearing the SFI 16.5 manufacturer’s certification label on all webbing components. Ratchet style lap belt adjuster mechanisms are permitted if complying with and bearing the SFI Foundation’s 16.1 or 16.5 certification label. Harness systems must be in new or perfect condition with no cuts, frayed layers, webbing elongation, chemical stains, or excessive dirt, and must be in flexible condition (i.e., material must not be rigid). All belts must be replaced 5 years from the month and year of manufacture or by the expiration date on label. IF OUT OF DATE THE TECH MAY APPROVE ON A RACE-TO-RACE BASIS AS LONG AS THERE ARE NO TEARS OR FRAYS AND BELTS REMAIN PLIABLE AND IN “LIKE- NEW” WORKING CONDITION. All harnesses must be installed per the manufacturer’s instructions and must follow SFI standards. Mixing and matching varying manufacturer’s belt components on a single system is not permitted – each occupant’s safety harness shall consist of belt components from a single- manufacturer. No portion of the safet harness system may be altered in any fashion from the manufacturer’s original design. No surplus safety harnesses are permitted. NOTE: Where “D” rings are used, the excess belt material must thread back through the D ring a third time Mounting hardware must be a minimum of 0.375-inch Grade 8 bolts with a 1.5-inch diameter flat washer attached through the body or frame using lock nuts or cotter keys. All harness hardware must be safety tied or cottered key when applicable. If a wraparound type harnesses is used on a tube, care must be taken to prevent them from slipping and chafing from sharp frame components.
  • SAFETY NETS: KOTK approved safety nets are mandatory on all vehicles and must cover the complete open area of the cockpit on both sides of the vehicle, SFI 27.1 driver/navigator ingress/egress window nets are mandatory. Nets must be installed on the inside of the roll cage to prevent them from being damaged or coming off in the event of a roll over or slide on the side. Nets attached to doorframes are permitted if door has a positive secondary latching device. Nets must be installed so that the occupants can release the netting unassisted and exit the vehicle regardless of the position of the vehicle. Net installation must meet with the approval of the UTV technical inspector. The net border or edge and the net attachment must be made of materials that are as strong or stronger than the net itself. Net attachments must be every 6 inches. Acceptable attachments are not limited to the following: Adel clamps, one-way snaps, metal hooks, and steel rods. All nets must have no more than a 1inch gap on all borders to contain hands and fingers inside the vehicle in the event of a rollover or slide on the side. No zip ties may be used for the Ingress/Egress net. No Velcro may be used. Spring loaded or pushbutton seatbelt style buckles will be allowed. A quick release seat belt style pushbutton latch will be allowed. KOTK requires that occupants of all vehicles must be protected during a roll over in such a manner that prevents them from extending from the body or frame of vehicle.
  • SEATING: A recognized manufacturer that specializes in seats for racing applications must make all seats. No stock production seats are allowed except for Pro Stock/Sportsman Classes. All seats must be securely, mounted to frame of vehicle and be properly reinforced in such a manner as to keep seat from moving in relationship to the frame. Adjustable track type seats must be securely mounted as to allow no lateral or vertical movement. Head and neck restraints are mandatory. All portions of the roll bar or bracing that might encounter the vehicle occupant’s helmets must be padded.
  • GENERAL VEHICLE COMPONENTS: The vehicle occupants must be able to enter and exit, unassisted and with great ease, the driving compartment with the vehicle in any position. Firewalls and/or bulkheads must separate the driving compartment from any fuels, engine fluids and acids. The roof shall also be covered with sheet metal or sheet aluminum if Fiberglass roof is used, Sheet Metal must be attached to the top of the cage. Minimum of .080-inch(2mm) aluminum recommended 0.125 (3mm) covering all areas.
  • DOORS & LATCHES: All vehicles with operational doors must have positive locking mechanisms and must have a permanently attached positive secondary latching device.
  • FIREWALLS: All vehicles must have an all-metal firewall separating the driver’s compartment from the danger of fire from the engine and fuel supplies. A minimum firewall must be liquid tight and extend from the driver’s shoulder height to the vehicle floor and from body side to body side. If rear mounted fuel cell is higher than drivers shoulder height, the firewall must extend at least 2 inches above the top of the fuel cell. Any hole placed in the firewall for structure members, lines, etc. must be kept to a minimum. The hole should not have more than 0.0625-inch
    gap around the items passing through the firewall. Metallic tape must be used to seal the hole between the firewall and the item passing through the firewall.
  • WEIGHT: Official vehicle weight shall be considered the dry weight of the vehicle upon completion of the event with the deletion of fuel from the fuel cell, removal of spare tires, tools, and spare parts and without occupants in vehicle. Official weight will be the weight as shown on the KOTK official scales.
  • FLOORBOARDS: Floorboards or belly pans are required on all vehicles and must be attached by a minimum of six 0.25-inch bolts (Zeus fasteners are permitted) per side if not an integral part of the body or chassis. Floorboards must cover the entire area from in front of the pedal assembly to behind the seats and from outside edge to outside edge on each side. Floorboards in the front must extend up in front of the pedal assembly. Installation must be done in such a manner as to afford maximum protection to the occupants from debris.
  • BUMPERS: A safe front and rear bumper are required on all vehicles. No hazardous front or rear bumpers, nerf bars, frame heads or other protruding objects from vehicles are permitted. Bumpers must extend 2 inches past both front and rear tires. Ends must be capped and rounded to prevent any sharp edges. Bumpers and nerf bars must be designed in a way as to reasonably inhibit two vehicles from becoming locked together.
  • MIRRORS/REAR CAMERAS: A rear-view mirror and one side mirror are required on all vehicles. Mirrors must have at least 6 square inches of mirror surface. Mirror must have a reasonably unobstructed view of area behind vehicle. Rear view cameras are allowed but are in addition to the mirrors.
  • SKID PLATES: Skid plates designed to reasonably protect the front suspension, steering, brake components and undercarriage are recommended on all vehicles. Skid plate must be securely attached.
  • STORAGE: All spare parts and extra equipment carried on a vehicle must be securely fastened to prevent movement during competition. All spare parts and extra equipment must be carried in such a manner as to reduce the risk of injury to the occupants.
  • FENDERS: Fenders must be securely attached to UTV on all classes. The removal of fenders during competition for any reason other than damage incurred during the competition will result in disqualification.
  • CHASSIS & BODY: All body parts must remain on the vehicle (accidental damage excluded) during the entire length of race. All repairs must meet with the approval of KOTK.
  • HOSES: All fuel and brake line hoses including metal lines and fittings must be clamped and/or safety wired.
  • ADVERTISING ON VEHICLES: Advertising, symbols, and names may be displayed on vehicles contingent that they do not interfere with identification markings and if they are in good taste.
  • RADIO &COMMUNICATIONS: A VHF type radio is required in all race vehicles. All UTV race vehicles must have their team radio frequency posted inside their vehicle on the roof area. KOTK official Frequency is 151.625 (WEATHERMAN). The
    KOTK frequency is required on every radio. All race teams are required to provide team specific radio frequency information to the KOTK Tech Inspector.
    • NOTE: Any race or support vehicle radio equipment is strictly prohibited from interfering with or disrupting race communications on all frequencies allotted to the amateur radio band, public service band, marine band, and aircraft band as permitted by FCC rules.
    • Outboard linear amplifiers with an output over 25 watts are prohibited. An outboard linear amplifier is a device that boosts the power of the radio and is connected between the radio and antenna.
  • SCORING TRANSPONDERS/GPS: All vehicles in competition shall have a transponder mandated by KOTK. All transponders shall be securely attached to the race vehicle.
  • PENALTIES: At the discretion of the race director, Any UTV race team caught breaking these rules “cheating” will receive a minimum penalty of, Disqualification for the race and a 1 race suspension. KOTK has the right to mark, tag or seal any part of a race UTV. KOTK has the right to inspect any engine at any time for the purpose of class compliance inspection. A fee may be required for the inspection.
  • OCCUPANTS: All UTV race vehicles must have a driver and a co-driver in the vehicle for the entire race (excluding the RS1). Multiple drivers and co-drivers are allowed. All participants must register and attend the drivers meeting. 
  • UTV ALL Checkpoints: 25 MPH Zones into checkpoint a 10 MPH zone between the Orange Cones to be scored, 1 minute stop and go penalties for those that FAIL these rules. Finish/Lap
    scoring Loop entry speed “25 MPH” Zones into the Loop. After you finish, move around the course to the pits, please be careful, others may still be racing, don’t hinder them. Don’t abuse the course workers! They are keeping your score!
  • Changes / updates / revision: The KOTK inspector will have the final say on all entries. KOTK reserves the right to split or combined classes to accommodate similar classes of vehicles. KoK reserves the right to revise and update all rules. Please review all the class rules: USFS approved spark arrestors on Non Turbo cars, Seat belts, Window nets, Rear lights wired directly & Numbers. A reminder this is a NO Chase Cars – meaning no chase or support vehicles on the course – only at the pits. You can get support help from a fellow race car ONLY during the race!. A reminder that ALL race vehicles must have a current OR ATV Permit – they are only $10 – makes the BLM happy.