BBMods Raceway rules
13.5 SC Modified Rules
v1Class Rules13.5 SC ModEffective Jul 28, 2026· Updated 3 months ago
Summary of recent changes
Current class specification.
Spec sheet
Governing
- Notes
- SCT-style shocks only; battery down chassis center; equal-length arms/equal-offset rims; adjustable arms legal
Motor & ESC
- Motor type
- Spec brushless
- Motor turn
- 13.5T
- ESC
- Blinky / zero-timing
- Blinky mode
- zero_blinky
Battery & power
- Battery chemistry
- LiPo
- Cells
- 2S
- Max voltage
- 8.44V
- Hard case
- Required
Tires
- Spec tire
- Proline Hot Lap, Duratrax Bandito, Traxxas, or DE Racing SC
Weight & body
- Body
- Sipple, HRC, Bad Boys, Barts modified body or equivalent; 1.5" max rear spoiler
Chassis & Suspension
- Chassis
- Any factory-stock 2WD short course truck (rear or mid motor); no one-off/offset/woven-carbon/double-deck
1.Chassis
Any factory-stock 2WD short course truck (rear or mid motor). No one-off/special chassis (e.g., Murfdogg, BBE Razor, GFRP/Hyperdrive). No offset/LTO, woven-carbon, or double-deck chassis.
2.Body
Sipple, HRC, Bad Boys, Barts modified body or equivalent; windows may be cut, sails intact (two-piece rear sail OK). 1.5" max rear spoiler; no straight sail/sidedam; rear body must cover rear tires; no flopper bodies.
3.Motor & ESC
13.5T ROAR motor. ESC in blinky.
4.Battery
Any ROAR-approved 7.4V hard-case LiPo, 4.22V/cell max.
5.Tires
Proline Hot Lap, Duratrax Bandito, Traxxas, or DE Racing SC.
6.Other
SCT-style shocks only. Battery down chassis center. Equal-length arms, equal-offset rims. Adjustable arms legal.
Version history
v1Published.
Jul 28, 2026