Sportsman
Sportsman is the primary beginner racing class at The Park Speedway. It uses the durable Traxxas Slash platform with controlled electronics and mostly stock replacement parts.
Rules First · Technical Help Second
Rules &Tech Center
Start with the official rules, then learn what each class is, what racers commonly use, which spare parts are worth carrying, and how to prepare for tech.
1Open Quick Rules
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Jump directly to the quick rules dropdowns for the most-used electronics, chassis, tire, body, suspension, and battery requirements.
Complete Legal Reference
Official Park Speedway Rules
Use the dedicated Official Rules page for full conduct, marshalling, battery, technical-inspection, and class rules.
Fast Rule Reference
Class Rules Drop-Downs
Open your class for the most-used build requirements without leaving the hub. For complete wording, conduct, marshalling, battery, technical-inspection, and final authority, use the Official Rules page.
Quick reference only. These summaries are designed for fast class checks. Read the complete Official Park Speedway Rules whenever full wording or a race-day interpretation matters.
SportsmanBeginner · Traxxas Slash 2WD · Controlled power
ElectronicsXR10 Justock/13.5, XL-5/12-turn, or Traxxas BL-2s; any servo.
ChassisTraxxas Slash LCG or HCG with current stock-part and RPM limits.
TiresOpen short-course tires and wheels.
BodyAny reasonable body; legal dirt Late Model-style bodies permitted.
ShocksStock towers; stock Slash or permitted GTR shocks.
BatteryAny legal 2-cell battery at or below 8.44 volts.
Super Stock SlashSlash-based · Controlled power · Late Model body required
ElectronicsXR10 Justock/13.5, XL-5/12-turn, or Traxxas BL-2s; any servo.
ChassisTraxxas Slash LCG or HCG with current stock-part and RPM limits.
TiresOpen short-course tires and wheels.
BodyA dirt Late Model body is required.
ShocksStock towers; stock Slash or permitted GTR shocks.
BatteryAny legal 2-cell battery at or below 8.44 volts.
Traxxas ModifiedFactory platform · BL-2s · GTR shocks
PlatformFactory Traxxas Modified is the reference vehicle.
ElectronicsFactory BL-2s system is the expected controlled-power foundation.
ShocksFactory GTR shock package.
ChangesConfirm event-specific tire, gearing, body, electronics, and replacement-part limits.
BatteryAny legal 2-cell battery at or below 8.44 volts.
ImportantThe main rulebook does not currently publish a separate complete Traxxas Modified section.
Street StockProduction buggy · Sealed 13.5 · Street Stock body
ElectronicsXR10 Justock ESC and Justock 13.5 motor only; stock settings and approved seal.
ChassisCommercial production buggy; rear or mid motor; no custom chassis.
TiresOpen buggy tires; additives and treatments allowed.
Rear ArmsAdjustable rear arms are prohibited.
BodyStreet Stock appearance, windshield, no decking, maximum 1-inch spoiler.
SuspensionAny shocks and shock towers.
13.5 Late Model2WD transmission chassis · Sealed 13.5 · ROAR body
ElectronicsXR10 Justock ESC and Justock 13.5 motor only; stock settings and approved seal.
Chassis2WD transmission chassis only; direct drive prohibited.
TiresOpen tires for 2026; additives and treatments allowed.
BodyROAR-approved 1/10 Late Model body; aerodynamic changes remain compliant.
Rear ArmsAdjustable and aftermarket rear arms permitted within chassis and body.
SuspensionAny shocks and shock towers.
13.5 Non-Wing Sprint2WD sprint chassis · Sealed 13.5 · No top wing
ElectronicsXR10 Justock ESC and Justock 13.5 motor only; stock settings and approved seal.
Chassis2WD transmission chassis only; direct drive prohibited.
TiresOpen brand, compound, tread, and size; treatments allowed.
SuspensionAny shocks and shock towers.
BodyLegal non-wing sprint configuration; confirm event-specific body details.
BatteryAny legal 2-cell battery at or below 8.44 volts.
Mod SprintCommercial sprint chassis · Open power · Open buggy tires
ElectronicsAny motor and ESC; tuning and external cooling fans allowed.
ChassisAny commercially available 1/10 production chassis; no custom-built chassis.
TiresOpen buggy tires; additives and treatments allowed.
SuspensionAny shocks and shock towers.
BodyLegal sprint body and wing configuration for the event.
BatteryAny legal 2-cell battery at or below 8.44 volts.
Short Course ModifiedPurpose-built SC platform · Open power · Dirt Modified body
ChassisPurpose-built and commercially manufactured vehicles are legal; GFRP Prodigy is an example.
ElectronicsOpen motor and open ESC.
BodyOpen-wheel dirt modified body resembling a full-size dirt modified.
TiresOpen tire rule using short-course-based or short-course-sized wheels and tires.
PreparationFollow manufacturer instructions and current general rules.
BatteryAny legal 2-cell battery at or below 8.44 volts.
Complete Legal Reference
Need More Than the Quick Reference?
The Official Park Speedway Rules page contains general conduct, public-park etiquette, turn marshalling, the 8.44-volt battery rule, technical inspection, every class rule, and the final authority notice.
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Each page combines a plain-language overview with legal-build reminders, common platforms, spare-parts guidance, pre-race checks, and setup tools.
Super Stock Slash
Super Stock Slash uses the same controlled Slash foundation as Sportsman but requires a Late Model body and generally produces closer, more setup-sensitive competition.
Traxxas Modified
Traxxas Modified is a factory-built route into modified-style racing. Treat it as a controlled platform and confirm event-specific requirements before changing tires, gearing, electronics, or body components.
Street Stock
Street Stock converts a commercially available buggy into a recognizable dirt Street Stock using sealed 13.5 electronics, open buggy tires, and production-based chassis choices.
13.5 Late Model
13.5 Late Model pairs a transmission-equipped 2WD chassis with sealed Justock power and a ROAR-approved Late Model body. It rewards tire choice and disciplined setup work.
13.5 Non-Wing Sprint
Non-Wing Sprint uses sealed 13.5 electronics on a transmission-equipped 2WD chassis without a top wing. It rewards smooth steering, balanced side bite, and controlled throttle.
Mod Sprint
Mod Sprint is the open-power sprint class. Any legal motor and ESC may be used on a commercially available 1/10 production chassis, making drivetrain reliability and throttle control critical.
Short Course Modified
Short Course Modified uses short-course-sized tires and an open-wheel dirt modified body on a purpose-built or commercially manufactured platform.
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Rules
The complete authority for conduct, batteries, technical inspection, and class legality.
Tech Center
Explains classes, common platforms, spares, and tech preparation.
Driver's Library
Teaches diagnosis, setup, track reading, and driving.
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Use the rules to confirm legality, the Tech Center to prepare the car, and the Driver's Library to improve it.