06/02/2026
OFFICIAL RULES 2026
Rookie/ Novice
This Class is intended for new racers to buy a car then charge a battery and get on the track to race!! Rookie class will be added to night of racing anytime.
Classes for Rookie:
Traxxas modified, Traxxas Late model, Losi sprint, Sr10 dirt street stock mid or rear motor.
Rookie class will follow all rules of the Traxxas modfied, Traxxas Late Model, Losi Sprint. SR10 Street stock must be box stock how it comes from box. There is a break out of time when a novice driver breaks out more than 3 times in 3 races they will be moved to regular class in the car they are racing.
LOSI SPRINT/WINGLESS SPRINT
ESC - Stock
Battery - Up to 5200mAh 50C 2S 7.4V hardcase lipo 8.44 volts max
Motor - Stock
Tires - Stock
Stock servo
Stock 20t pinion & 84t spur
Stock shocks & springs(no limiters)
Open radio & receiver
You may replace stock ball cups
Other than what is stated, no aftermarket parts allowed
Stock body & cage only
NO WEIGHT REDUCTION ALLOWED
NO GYRO OR DRIVING DEVICES ALLOWED
TRAXXAS MODIFIED
ESC - Stock
Battery - Up to 5200mAh 50C 2S 7.4V hardcase lipo 8.44 volts max
Motor - Stock
Tires - open
Stock servo
Stock 23t pinion & 86t spur
Stock shocks & gtr optional springs only(no limiters)
Open radio & receiver
Other than what is stated, no aftermarket parts allowed
Stock body only
NO WEIGHT REDUCTION ALLOWED
NO GYRO OR DRIVING DEVICES ALLOWED
TRAXXAS LATE MODEL
ESC - Stock
Battery - Up to 5200mAh 50C 2S 7.4V hardcase lipo 8.44 volts max
Motor - Stock
Tires - open
Stock servo
Stock 23t pinion & 86t spur
Stock shocks & gtr optional spring only (no limiters)
Open radio & receiver
Other than what is stated, no aftermarket parts allowed
Stock body only
NO WEIGHT REDUCTION ALLOWED
NO GYRO OR DRIVING DEVICES ALLOWED
SC MODIFIED
ESC - Open
Motor - Open (Roar Approved)
Battery - OPEN 2S hardcase lipo 8.44 volts max
Tires - Open
Any 2wd OEM or after market short course chassis allowed.
Adjustable rear arms are allowed
SC Body Rules:
13" max body width
28" max length (bumper to spoiler)
7.5" max body height measured from bottom of chassis
1" max deck rake.
1" max center deck taper (widest point of the deck can only be 1" wider than the narrowest point of deck)
1.5" max spoiler height
Spoiler end plate max 2” high off center deck and 3.25” long
0.5" max roof rake measured from deck
Maximum Roof width 9"
Maximum Roof length 9"
No roof spoilers, a bend down at the trailing edge of the roof is allowed for strength
Roof side rails allowed but must have a scale appearance and be on both the left and right sides of the roof
1/4" bend down at the leading edge of the roof allowed
Roll cage/roof supports must be cut or formed to resemble a roll cage
No solid panel roof supports
Window netting and rock guards are allowed
Nose sides can extend a max of 1/4” above the plane of the nose panel
Nose sides can extend a max of 1/4” above the plane of the hood panel
The main nose panel must be a flat plane, no concave or scooped noses allowed
Rear wheel wells must be cut out to expose most of the rear wheel
Left and right windows and sails can be open as long as both sides are the same
Mud boss body is ok to run in this class
NO GYRO OR DRIVING ASSIST DEVICES ALLOWED
SC LATE MODEL
Chassis Any 2wd OEM or after market short course chassis allowed.
Adjustable rear arms are allowed
Open Class
ESC - Open
Motor - Open (Roar Approved)
Battery - OPEN 2S hardcase lipo 8.44 volts max
Tires - Open
DODC RULES APPLY - CLICK HERE TO GO TO DIRTOVAL.COM FOR RULES
NO GYRO OR DRIVING DEVICES ALLOWED
410 SPRINT
ESC - Open
Motor - Open (Roar Approved)
Battery - OPEN 2S hardcase lipo 8.44 volts max
Tires - Open
DODC RULES APPLY- CLICK HERE TO GO TO DIRTOVAL.COM FOR RULES
NO GYRO OR DRIVING DEVICE ALLOWED
360 SPRINT
ESC - Open (must be in blinky mode, zero timing)
Motor - ROAR approved stock spec 13.5 (no outlaw 13.5 allowed)
Battery - OPEN 2S hardcase lipo 8.44 volts max
Tires - Open
DODC RULES APPLY- CLICK HERE TO GO TO DIRTOVAL.COM FOR RULES
NO GYRO OR DRIVING DEVICE ALLOWED
STREET STOCK
ESC - Open
Motor - Open (Roar Approved)
Battery - OPEN 2S hardcase lipo 8.44 volts max
Tires - Open
CHASSIS RULES - Any 1/10th scale factory based off-road buggy
Aftermarket turnbuckles and ball cups are allowed
OEM option parts designed for their cars are allowed
Body:
MAX WIDTH 10.250”
Max 1” spoiler measured from the deck
Chili Bowl approved bodies.
NO GYRO OR DRIVING DEVICE ALLOWED
Super Trucks
Chassis Any 2wd OEM or after market short course chassis allowed.
Adjustable rear arms are allowed
ESC - Open
Motor - Open (no 4 pole motors)
Battery - OPEN 2S hardcase lipo 8.44 volts max
Tires - Open
NO GYRO OR DRIVING DEVICE ALLOWED
Only approved bodies. Shark bodies are only allowed at this time
Midget
NO GYRO OR DRIVING DEVICE ALLOWED
Motor: HOBBYWING 13.5 JUST STOCK #30408010
ESC: HOBBYWING JUST STOCK #30112003 G3S 30112005 . Wires can be changed on the speed control but must be replaced with same size wire which is 14 awg.
BATTERY: OPEN 2S hardcase lipo 8.44 volts max
Tires - JCon Sprinters
General - Maximum Overall Length: 16.750". Maximum Chassis width: 4.2" Maximum of 4 shocks can be used. Solid axles are allowed. If solid axles are used the rear axle must be square with centerline of the chassis and parallel to the front axle.
Wheelbase- Min 9.” Max 10.0”
Width- Min 8.5” Max 10.0”
Rear Toe- Only non adjustable rear arms can be used. Trackside toe adjustable rear hubs and or arms are not allowed. Trackside adjustable wheelbase is not allowed (can’t have toe blocks or anything else attached to an easily adjustable mechanism to allow for wheelbase change trackside). Left rear can be toed in via toe block. Right rear can be toed in but can NOT be toed out.
Offset- Right side of the cage can be no further offset from the outside of the RR tire than 3.625”
Ballast Weight- Brass, tungsten or steel hubs, arms, arm inserts, caster blocks, steering arms are not allowed. Ballast weight can be attached to the main chassis area is allowed as long as it’s secured properly.
Transmission – 3 gear transmissions only. No DD, 2, 4 or 5 gear transmissions will be allowed. All gears must be full gears. No narrowed or lightened gears allowed. Plastic, Aluminum and Steel gears are permitted. Steel outdrives only. Blades are permitted. No gear diffs allowed. No rear motor cars allowed unless you can do it in a manner that the tail tank is appropriately sized and located.
Solid Axle Option- If a solid rear axle design is used it, the motor must be mounted to the chassis and cva/cvd must be used to drive the rear axle. No belts or chains will be allowed. A spur gear and pinion must be used in conjunction with the motor plate mounted to the chassis.
CVA/CVD- Dog bones must be equal length. Axles and bones must be made from steel. No aluminum, titanium or magnesium axles or bones allowed.
Cage – Must have a scale appearing contemporary cage made out of rounded stock. The cage must be symmetrical left to right and mounted level to the chassis. Unrealistic shaped cages designed to exploit the rules below are not permitted. Maximum cage width at driver halo, down tubes, and top frame rail: 3.600". Minimum cage height is 6.00” while maximum cage height 6.25" from top of chassis to top of cage at highest point. Rear “down tubes” must slant forward. All cage and body components such as cage, bumpers, nerf bars, hoods, side panels, tanks, etc. must be mounted on the centerline of the cage. Chassis may not extend outside of the side panels by more than 1/4" on either side.
Bumpers – A tubular front bumper must be used and may not be designed to direct air or create downforce. Maximum height of front bumper is 1.5” from the bottom of the lowest point of the chassis. Scale appearing side nerf bars must be used on both sides of the car. A scale appearing rear hoop style bumper must be used. Bumpers and nerf bars must be made of rounded stock with no sharp edges.
Tail tank – A traditional scale appearing rounded style three dimensional rear fuel cell must be used. A rectangle (Swindell) style rear tank is allowed but must have a proper style rear bumper to go with it. You can not simply have a flat tail section with no bumper.
Headers - Three dimensional scale appearing headers must be used on the left side of car in “engine area”. Material must be plastic or aluminum. Not allowed to make inserts for these to add ballast weight.
Side panels – Flat side panels may be made from molded or fabricated polycarbonate. Maximum height of side panels in front of the driver cockpit is 4.50” from the bottom of the chassis. Must have minimum of 1/2" high by 2.5" long openings on both sides of cage in driver compartment. Additional material may be used/added to either side of the side panel openings to replicate a scale appearing driver but may not exceed 1" x 1". Side panels may not extend beyond the cage by more than 0.25”. Side Panels may not extend into the area that is behind the rear axle AND below the top of the rear nerf bar. Scale appearing driver arm guards and engine vents may be used but cannot extend more than 3/8" from the side panels. No other flares or turnouts designed to deflect, trap and/or form a pattern for air to travel in a directed manner are permitted except for those used to cool electronics.
Hood – A scale appearing hood must be used and is defined as beginning at the point where torsion tubes or cross brace would be on a 1:1 car behind the front bumper. The hood must be tall enough and wide enough to allow room for a scale engine intake and air cleaners (no unrealistically low or flat hoods). Minimum vertical gap from top of hood to bottom of front cage crossbar.
Nose Area – No molded or fabricated nose piece may be used and is defined from the torsion tube or cross brace would be on a 1:1 car. You are not allowed to have anything below that point that is on the same plane as the hood. No scoops or bodywork allowed in this area. You can have side panels along the front of the cage but they are not allowed to stick past the cage sides.
Extra Panels – No molded or fabricated scoops, wings, or extra panels can be added to the car to create downforce. The panel in the cockpit area that is used on full size cars at the Chili Bowl is not legal.
5th Scale Dirt Late Model
01/01/2026
VOT Approved
Bodies:
Maximum overall body length 46″. This measurement will include the spoiler and end caps to the front bumper. See picture at the end of these rules. (Fig-1)
Maximum width where deck and A post meet and where rear quarter panel and deck meet 20″.
Maximum width at front flopper’s widest point 26″.
Maximum Deck to Roof height is 4 ½ inches.
Roof to Deck Height Rake Front to Back ¾” Maximin. Roof must have rigid supports.
Must have the Woo/Lucas appearance (No wedge style bodies).
Only holes allowed in deck are for Spark plug and Transponder.
There will be no metal body parts of any kind. Roll cage and body
supports can be metal.
No part of the deck can be higher than 12″ from ground.
Rear Spoiler Specs:
Rear spoiler can only be as wide as the body at the rear quarter panels.
Rear spoiler 5″ max from deck.
The end caps must be a triangle shape and be in proportion to today’s Late Models.
The End Caps most be within the template supplied with these rules.
You may have one fin on the spoiler and two side caps.
The 3rd fin must also be the same dimension as side cap.
The 3rd fin can be located anywhere on the spoiler between the two side caps.
The 3rd fin must be in line with the side caps on the front leading edge.
5th Scale Dirt Modified
01/01/2026
VOT Approved
UMP Style Bodies:
Maximum overall length 45 inches.
Maximum deck width 19 inches. (At no point can the deck be lower than ¾ inch from the top of the doors).
Maximum deck height is 12 inches from rear of deck to ground.
The front deck height must be a minimum of 8 inches high from ground.
Nose width can be a max of 10 inches at front/bottom leading edge. (Edges/lips on the sides of the nose can be no taller than ½ inch).
The hood must tapered out to the “A” post the full width of the deck. (Meaning the rear of the hood must be the same width as the front of the deck).
Door panels can be a max of 28 inches long.
Roof dimensions:
14 inches wide maximum.
12 inches long maximum.
Maximum height from deck to roof is 4.5 inches. Maximum ½ inch of rake. (Meaning the front can be no more than ½ inch lower than the rear measured from the deck).
Sail panel can be a maximum of 12 inches long if attached to the spoiler. A maximum of 10 inches long if side boards are used. The sail panel must taper down from the roof to the spoiler. (It cannot be squared off).
Sail panel must be closed. (Window between “A” pillar and sail panel must be open and must be a minimum of 3 inches tall).
Spoiler maximum height is 3 inches.
Spoiler side boards max of 3 inches long, 3 inches high at rear, and 1.5 inches high at the front.
Rear spoiler can be no wider than the body.
No air scoops that direct air for motor or cooling.
No Aero devices in/on decking.
Must have todays Open Wheel UMP Modified appearance.
EDM and Big Block Mod Bodies:
Maximum overall length 42”
Maximum width of deck at any point 18”
Maximum width of nose at front/bottom leading edge 10”
Maximum length of side panels 30”
Maximum width of side panels 9½”
Maximum height of roof at any point 5 ½” from deck
Roof maximum width 15” length 14”
Maximum height of sail panel from deck 6”
No air scoops that direct air for motor cooling. No aero devices in/on deck
There will be no metal body parts of any kind. Roll cage and body supports can be metal
Must have appearance of current EDM car, refer to pic.
No part of deck can be higher than 12” from bottom side to ground
Rear Spoiler Specs:
Rear spoiler can only be as wide as the body at the rear quarter panels
Rear spoiler 3” max from deck
5th Scale Sprint
01/01/2026
VOT Approved
General
– Same Chassis\Tire\Motor rules as 1/5 Open Modified
– All cage and body components such as cage, bumpers, nerf bars, hoods, side panels, tanks, etc. must be mounted on the centerline of the cage.
– Body is always subject to track approval
(All measurements taken from bottom of chassis)
Cage – Sprint cars must have a scale appearing contemporary cage made from rounded, square or rectangular stock (Any material). The cage must be symmetrical left to right and mounted level to the chassis. Unrealistic shaped cages designed to exploit the rules below are not permitted.
Maximum cage width at driver halo, down tubes, and top frame rail: 9″.
Bumpers – A flat, curved or tubular front bumper (or combination of) must be used and may not be designed to direct air or create downforce.
Nerf Bars – Scale appearing side nerf bars must be used on both sides of the car. A scale appearing rear hoop style bumper must be used. Bumpers and nerf bars must be made with no sharp edges.
Tail tank – A traditional scale appearing rounded style three- dimensional rear fuel cell must be used.
Headers – Three- dimensional scale appearing exhaust headers are optional
Side panels – Flat side panels may be molded or fabricated. Openings on both sides of cage in driver compartment must be open in realistic form. (Note that the top wing mounts may cover these openings for winged classes.
Hood Area – A scale appearing hood must be used and is defined as beginning at the front axle and ending at the front of the driver cockpit. The hood must be symmetrical from left to right.
Wings
Front wing/mounts – The front wing center section may not extend in front of the front bumper.
Front Center Max – 9″ x 8″
Front Sides Max – 8″ x 4″
Top wing/mounts
Top Center Max – 18″ x 15″
Top Sides Max – 19″ x 9″
Center section and side panel corners and edges must be rounded and free of sharp edges. Main and Front wings must be mounted so that they are centered on cage, no offset wings.
Wing center sections must have all 4 corners set at 90 degree angles, no canted or angled panels. Wings must also be mounted level from side to side.
Side panels must have braces that hold side panel rigid at 90deg. to center section during race conditions. Two braces are required from top of the center foil to the left side-board and one brace is permitted below the center foil to the right side-board.
Braces can be a maximum of 1″ wide and front edge of front brace must be no more than 1.5” back from side panel leading edge. Side Panels may have front, back, top and bottom turnouts of no more than .5″ and are included in max dimension. Center sections will be allowed a .75″ wicker and a turndown at the leading edge.
Chassis & Suspension
01/01/2026
VOT Approved
Must be 1/5 production based stamped aluminum 2 WD 5B buggy chassis.
No carbon fiber chassis
No shortened, extended, offset or flat style chassis allowed. All chassis and motor plate dimensions, shape, and configuration must remain stock.
All parts must be stock or aftermarket stock style Baja upgrades. (Durability only).
16 MM bore stock type shock only.
Tethers, limiters and compensators are allowed.
All A arms must be stock dimensions. (No extended A arms).
Rear toe must be adjusted at the rear hubs.
Wheel extenders allowed. (2” maximum per wheel).
Adjustable front and rear shock towers allowed.
All components must remain in stock locations. (including the battery).
No shimming or spacers under mounting points to chassis.
Rear tow may be adjusted at rear hub carrier only.
No ballast/weight allowed anywhere on chassis or body.
No metal or carbon fiber front bumpers.
All parts must be available to the public from a Store front/Track hobby shop or on-line store.
No homemade chassis or suspension parts of any kind.
No two speeds.
**** STOCK LATEMODEL RULES MODIFIED STARTING 2026 **** (NOT PROSTOCK)
No Titanium parts (includes but not limited to: hinge Pins, layshaft, screw kits, etc…)
No Carbon Fiber Parts (Front Tower (with support) , rear towers, and brake rotors are allowed)
Stock A-Arms must be used (Right Rear can be upgraded, but must still maintain stock dimensions)
Stock Gear Carrier must be used (with the 4 rubber grommets)
Mad Max Tires (OEM Grooves only- no regrooving or additional grooves), no modifications to rubber (inside or out)
Set Gear Ratio (Track specific)
Greystone 56/18
Worlds 56/18
The Barn 57/17
Springfield 56/18
Millpond 57/17
Rabbit Run 57/17
APPROVED GYROS FOR STOCK CLASS ONLY (NOT PROSTOCK)
AGFRC
HACKSLIDER
YOKOMO V4
FUTABA GYD470/450
If you are caught with an infraction, there will be a 1 year penalty for racing in that class
ENGINE RULES
01/01/2026
VOT Approved
OPEN ENGINE:
1. Size: 23cc to 30.5cc max.
2. Piston port only. (No reed valve).
3. Stock style/size flywheel. (No excessive lightening of flywheel allowed due to safety).
4. Stock style head/cylinder only.
5. Exhaust Can Style Only. (DDM # CY-15483). You may weld the stinger or add a plate around the Stinger. (You may port match the muffler to the exhaust port of the head. NO OTHER MODIFICATIONS ALLOWED.
STOCK ENGINE:
1. Zenoah G290RC (DDM ) Engine Only as supplied from Zenoah.
2. Stock Zenoah replacement parts only unless specified in these rules. (NO MODIFICATIONS)
3. No porting, grinding or modification to the Intake, Cylinder Head, Ports or Crank Case.
4. 3rd bearing must be used, (DDM Prt # DD271, Zenoah prt # 06034-06001)
5. Crank bearings must be stock Zenoah replacement bearings only. (DDM prt , Zenoah prt #1155-21240). Small seal on flywheel side must retain spring (no modification)
6. Walbro WT-990 Carburetor Only. (NO MODIFICATIONS).
7. May set pop off. (Change or cut Spring).
8. No spiral diaphragms allowed.
9. May run ball bearings on the throttle shaft. (Stock throttle shaft ONLY).
10. Cylinder head base gasket must be DDM # CA336 or CA337 ONLY.
11. May run the stock intake and gaskets or the DDM # AV540 intake any color with supplied gaskets or
gaskets of same dimensions. No Modifications.
12. Any commercially available Air Filter, Filter Adaptor or Velocity Stack.
13. Muffler CY-15483 Only. May weld muffler stinger or add a plate around the Stinger. (NO OTHER MODIFICATIONS).
14. 1 exhaust gasket only. (May use the stock gasket or copper Gasket).
15. Zenoah stock Clutch Assembly Only. Must use Zenoah clutch plate. (NO MODIFICATIONS).
16. May run any clutch spring.
17. No high response clutches
Engine Non-Tech items
1. Clutch Housing.
2. Fan Cover.
3. Engine Cover.
4. Starting System.
5. May repair stripped holes with HELI-COILS. (Location and Size must remain same as stock).
Wheel & Tire Specs:
Rubber tires only!
All wheels must be bead lock buggy based.
Must be 1/5 scale.
Cutting, siping and grooving are allowed.
Traction compounds are allowed.
Mods and Sprints must run Narrow Fronts
Tire option left up to track owner or promoter
Fuel:
Gas Only
Electronics:
Stability/Gyro control for steering only (Stock LM see approved List)
Full AVC may be track option.
General Rules:
The track and track officials have final say on rules enforcement
The track and track officials reserve the right to change any rules and specifications at any time in the fairness of the hobby
Send a message to learn more
