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2026 Oval Rules & Classes

2026 Race Season Rules and Classes

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General Rules:

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  • 4 or more cars to make a class (Novice excluded).

  • No AVC or Driving Aid devices on any car.

  • 1/10th scale vehicles only.

  • Electric powered vehicles only.

  • Hard Case Lipos are required, NO Soft Packs.

  • Race Director has final say on rules during race night.

  • If a rule changes it will be posted as soon as possible.

  • Racers are subject to tech at any time during the race night at the discretion of the race director.  

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​CLASSES: 

  • Novice

  • Pure Stock (SR10 / SR10m) 

  • Street Stock

  • Losi Sprint

  • Thunder Trucks

  • Short Course B Modified

  • 13.5 Late Model

  • Midwest Modified

  • Open Late Model

  • Midget

  • 360  (13.5) Sprint

  • 410 (Open) Sprint

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Novice class rules:

  • 1/10 Scale Buggy or SC Truck (Oval or Offroad)

  • Body: Open

  • Tires: Open

  • ESC: Open

  • Motor: Open

  • This is a Beginner Class; the goal of this class is to improve on overall skill level if you are new to racing.

 

Street Stock Rules:

  • Chassis: Any production 1/10th scale buggy, no oval chassis cars, Team Associated SR10 and SR10m are legal. No adjustable arms, only aftermarket buggy parts allowed.

  • Tires: Open

  • ESC: Blinky Mode

  • Motor: Any ROAR Approved 13.5T Motor

  • Body: NO decked bodies, 1-piece bodies only. Bodies shall be trimmed to factory cut lines; maximum 1" spoiler from deck lid.

  • Battery: Any 2s Lipo (Hard Case only).

  • This is also a Beginner Class; the goal of this class is to further improve your driving ability in traffic with more cars on track and improve on overall skill level.

 

Midwest Modified Rules:

 

Latemodel Rules:

 

Dirt Midget Rules:

*All height measurements are from bottom of chassis unless otherwise noted.*

General: Maximum Overall Length: 16.750".

Maximum Chassis Width: 4.2" 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 9.5” Max 10.0”

Width: Minimum = 8.5”; Maximum = 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 (Cannot have toe blocks or anything else attached to an easily adjustable mechanism to allow for wheelbase change trackside).

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 that can be attached to the main chassis area is allowed as long as it’s secured properly.)

Transmission/Drivetrain: 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, 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.

No aluminum diffs or gear diffs.

Electronics ESC: Hobbywing Justock Speed Controller #30112003

Motor: Hobbywing 13.5T Justock #30408010

Battery: Any 2s Lipo

Tires: JConcepts Sprinters (any compound) or Quasispeed on 2.2 buggy wheels (no mixing of brands).

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13.5 Sprint Rules:

DODC Rules Apply: https://www.dirtoval.com/Portals/1/rules/DODC_rules_04-18_complete.pdf?ver=2018-06-25-120732-387

Motor: Any ROAR Approved 13.5T Motor

ESC: Blinky Mode

Tires: Open

Battery: Any 2s Lipo

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Outlaw Sprint Rules:

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Pure Stock / SR10 

Class Description 

Pure Stock is a beginner and budget-friendly class intended for new racers entering dirt oval racing. The goal of this class is to keep the cars close to box stock, inexpensive to maintain, and easy to race competitively. 

The platform for this class is the Team Associated SR10. Drivers should focus on driving skill rather than expensive modifications. 

Any modification not explicitly listed as legal below is considered illegal. 

Approved Vehicles 

• Team Associated SR10 

No other chassis are permitted. 

Body 

Bodies must be Chili Bowl approved dirt oval style bodies. Bodies must maintain a scale appearance and may not be modified to gain aerodynamic advantage. 

Approved Bodies 

The following bodies are approved for use in the Pure Stock / SR10 class. Team Associated 

• SR10 Street Stock Body 

Custom Works 

• Part #9002 

• Part #9075 

JConcepts 

• Part #0395 

McAllister Racing 

• Part #125 

• Part #134 

• Part #136 

• Part #159 

• Part #181 

• Part #182 

• Part #264 

1

• Part #268 

• Part #290 

• Part #292 

• Part #303 

• Part #306 

• Part #313 

• Part #318 

• Part #321 

• Part #327 

MR/Kustoms 

• Part #18SS1W 

• Part #17SSPW 

• Part #18SS1S 

• Part #17SSPS 

• Part #KlaSSsh-23-KlaSShFAB 

• Part #23-KlaSShMC 

• Part #23-KlaSShWagon 

• Part #KlaSSIK-23-KlaSSiKFAB 

• Part #23-KlaSSiKMC 

• Part #23-KlaSSiKWagon 

Shark RC Bodies 

• Part #001 – Hammerhead 

• Part #002 – Outcast 

• Part #003 – Wildcard 

• Part #004 – Dawg Pound 

• Part #005 – Crazy Train 

• Part #006 – Shark Attack 

• Part #007 – Shark Mafia 

• Part #008 – Shark Knockout 

• Part #009 – Shark Ninja 

• Part #010 – Smoke Screen 

• Part #011 – Bull Shark 

Sipple Speed Shop 

• Part #SS24 – Heart Breaker 

Weight 

The car must meet a minimum weight with a body of 2.75 lbs. (Stock weight is 3.14 lbs) 

Electronics 

Electronics must remain completely stock and must be the electronics supplied with the Team Associated SR10 RTR. 

2

Allowed Electronics 

• Reedy 3300 kV Brushless Motor (stock SR10 motor) 

• Reedy SC600-BL ESC (stock SR10 ESC) 

• Any receiver provided the gyro is disabled 

• Team Associated XP Steering Servo or any steering servo with a retail/MAP price of less than $50 

Electronics must remain unmodified, including software settings. 

Not Allowed 

• Aftermarket motors 

• Aftermarket ESCs 

• Motor timing adjustments 

• Boost or turbo settings 

• Modified ESC firmware 

Battery 

• 2S LiPo batteries only 

• Hard case required 

• Maximum voltage: 8.4V fully charged 

• Maximum capacity: 6500 mAh 

• Battery must remain in the stock battery location 

Tires 

Only the following tires are permitted. 

Option 1 — Stock Tire 

• Team Associated SR10 stock tires 

• Must use stock foam inserts 

Option 2 — Spec Tire 

A spec tire will be determined as an alternative. 

Tire Prep Rules 

• Traction additives and cleaners are permitted (Papa Willie’s, TDK, etc.) • No Tire Warmers Allowed 

3

Chassis and Suspension 

• Stock SR10 chassis required 

• Suspension geometry must remain within stock limitations i.e. shocks must be mounted within factory holes on shock towers 

• Shock oil changes are allowed 

• Spring changes are not allowed 

• Ride height, camber, and toe adjustments are allowed 

Bearings 

Bearings must remain stock SR10 bearings or may be replaced with standard steel ball bearing replacements. Ceramic bearings are not allowed. 

Gearing 

• Stock spur gear required 

• Maximum pinion gear: 18T 

General Rules 

The goal of this class is to maintain: 

• Low cost 

• Equal performance 

• Beginner-friendly racing 

Any modification that provides a performance advantage outside the intent of this class may be ruled illegal by the race director.

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