The Thunderdome rules
13.5 Super Stock (Oval)
v1Class Rules13.5 Super StockEffective Sep 5, 2025· Updated 3 months ago
Summary of recent changes
Official ThunderDome rulebook (rev 2025-09-05). Discipline: Oval.
Spec sheet
Governing
- Governing body
- ROAR
- Notes
- 4mm min ride height; max battery temp 90F; SXT Black sauce only.
Motor & ESC
- Motor type
- Spec brushless
- Motor turn
- 13.5T
- Spec motor
- Any ROAR-approved 13.5 motor
- ESC
- Blinky / zero-timing (ROAR approved)
- Blinky mode
- zero_blinky
Battery & power
- Battery chemistry
- LiPo
- Cells
- 1S
- Max voltage
- 4.20V
- Hard case
- Required
Tires
- Spec tire
- Any 1/10 pan car foam tire except BSR yellow ring
- Tire additive
- Spec sauce only
Weight & body
- Min weight
- 1020 g
- Body
- Any 1/10 NASCAR Cup style body, wing or spoiler
Chassis & Suspension
- Chassis
- Any 1/10 pan car
1.Chassis Spec
Any 1/10th pan car.
2.Weight Spec
Minimum 1020g in race-ready trim.
3.ESC
Any ESC that is ROAR approved and running in ROAR approved "Blinky" spec software.
4.Battery Spec
ROAR approved 1 cell Lipo hard cased. MAX temp 90F at tech table. 4.20 MAX VOLTAGE.
5.Tire and Wheel Spec
Any foam tires intended for use on 1/10th scale pan cars except BSR yellow ring compound or equivalent tires.
6.Motor Spec
Any ROAR approved 13.5 motor.
7.Body Spec
Any 1/10th scale NASCAR Cup style body. Option of rear wing or spoiler. Removal of material from back of body is acceptable.
8.Ride Height Spec
4mm minimum.
9.Race Spec
30 lap qualifiers / 50 lap mains.
10.Tire Sauce
SXT Black ONLY.