Class Rules & Specifications
Stock 2WD Buggy
The Stock Buggy class is for intermediate/advanced/expert racers who run 2WD buggies with stock/spec motors.
The rules for this class are:
Chassis: Any 1/10th off-road 2-wheel drive buggy style chassis.
Motor: ROAR Approved stock 17.5 spec brushless motor.
ESC (Electronic Speed Control): ROAR Approved Non-Timing ESC’s, “Blinky” only
Batteries: 6-cell NiMH batteries, or 2-cell hard case Li-Poly batteries
Tires: Any wheel with rubber tires intended for the class is allowed.
Bodies: Any 2WD buggy body intended for the class.
Minimum Weight: 1500 grams.
See ROAR rules, page 49, section 8.7.1, for all chassis rules
Modified 2WD Buggy
The Modified Buggy class is for intermediate/advanced/expert racers who run modified motors.
The rules for this class are:
Chassis: Any off-road 2-wheel drive buggy style chassis.
Motor: Any brushless motor. Generally this class will be 13.5T motors and lower.
Batteries: 6-cell NiMH batteries, or 2-cell hard case Li-Poly batteries.
Tires: Any wheel with rubber tires intended for the class is allowed.
Bodies: Any 2WD buggy body intended for the class.
Minimum Weight: 1500 grams.
See ROAR rules, page 49, section 8.7.1, for all chassis rules
Modified Stadium Truck
The Modified Stadium Truck class is for intermediate/advanced/expert racers who run 2WD stadium trucks with modified motors.
The rules for this class are:
Chassis: Any off-road 1/10 2-wheel drive stadium truck chassis (no SCT chassis).
Motor: Any brushless motor.
Batteries: 6-cell NiMH batteries, or 2-cell hard case Li-Poly batteries
Tires: Any wheel with rubber tires intended for the class is allowed.
Bodies: Any 2WD truck body intended for the class.
Minimum Weight: 1700 grams.
See ROAR rules, page 50, section 8.7.2, for all chassis rules
13.5 4WD Buggy
The 13.5 4WD Buggy class is for intermediate/advanced/expert racers who run 4-wheel drive buggies with ROAR approved 13.5 motors.
The rules for this class are:
Chassis: Any 1/10th off-road 4-wheel drive buggy style chassis.
Motor: ROAR Approved stock 13.5 spec brushless motor.
ESC (Electronic Speed Control): ROAR Approved Non-Timing ESC’s, “Blinky” only
Tires: Any wheel with rubber tires intended for the class is allowed.
Bodies: Any 4WD buggy body intended for the class.
Minimum Weight: 1613 grams.
See ROAR rules, page 49, section 8.7.1, for all chassis rules
Modified 4WD Buggy
The Modified 4WD Buggy class is for intermediate/advanced/expert racers who run 4-wheel drive buggies with modified motors.
The rules for this class are:
Chassis: Any 1/10th off-road 4-wheel drive buggy style chassis.
Motor: Any brushless motor.
Batteries: 6-cell NiMH batteries, or 2-cell hard case Li-Poly batteries
Tires: Any wheel with rubber tires intended for the class is allowed.
Bodies: Any 4WD buggy body intended for the class.
Minimum Weight: 1613 grams.
See ROAR rules, page 49, section 8.7.1, for all chassis rules
Pro 4wd Modified Short Course Truck
The Pro 4 Short Course Truck class is for intermediate/advanced/expert racers. You must run 4WD trucks in this class.
The rules for this class are:
Chassis: Any off-road 4-wheel drive Short Course Truck style chassis.
Motor: Any 540 or 550 based brushless motor can be used; 550-size or 4-pole motors.
Batteries: 6-cell NiMH batteries, or 2-cell hard case Li-Poly batteries
Tires: Any rubber tire/wheel designed specifically for short course trucks only.
Bodies: Any short course truck style body.
Minimum Weight: 2505 grams
See ROAR rules, page 69, section 8.10.13, for all chassis rules
1/8th Electric Buggy
The 1/8th Electric Buggy class is for intermediate/advanced/expert racers, with electric motors and 1/8th 4wd buggy chassis.
The rules for this class are:
Chassis: Any 1/8th electric buggy specific chassis, nitro to electric converted chassis.
Motor: any 1/8th electric brushless motor.
Tires: Any rubber tire/wheel designed specifically for 1/8 buggy racing.
Bodies: Any 1/8 nitro or electric buggy body.
Minimum Weight: 3200 grams.
See ROAR rules, page 76, section 9.3.10, for all chassis rules
1/8th Nitro Buggy
The 1/8th Nitro Buggy class is for intermediate/advanced/expert racers, with nitro engines and 4wd chassis.
The rules for this class are:
Chassis: Any off-road 4-wheel drive nitro buggy style chassis.
Motor: .21 open competition engines max., or stock RTR pull start/roto start engines.
Tires: Any rubber tire/wheel designed specifically for 1/8 buggy racing.
Bodies: Any 1/8 nitro buggy body.
Minimum Weight: 3200 grams.
See ROAR rules, page 76, section 9.3.10, for all chassis rules
