BBMods Raceway rules
1/8 Mod Electric Late Model Rules
v1Class Rules1/8 Late ModelEffective Jul 28, 2026· Updated 3 months ago
Summary of recent changes
Current class specification.
Spec sheet
Governing
- Notes
- 17mm buggy wheels; traction compounds legal
Motor & ESC
- Motor type
- Open
- Motor turn
- Modified / open
- ESC
- Open
Battery & power
- Battery chemistry
- LiPo
- Cells
- 2S
- Max voltage
- 8.44V
- Hard case
- Required
Tires
- Spec tire
- Any 1/8 street-tread rubber
- Tire additive
- Allowed
Weight & body
- Body
- Molded one-piece from approved list (C&M, Losi, Ofna, RJ Speed, Stalker, Onstat); rear spoiler 3" max, no side dams
Chassis & Suspension
- Chassis
- 1/8 production-based 4WD buggy drivetrain (Losi, Ofna, X-Ray); wheelbase 12-5/8"-13", width 11-1/4"-13"
1.Chassis
1/8 production-based 4WD buggy drivetrain (Losi, Ofna, X-Ray, etc.). Dog-bone center drive; no mixing manufacturer drivetrain parts. Wheelbase 12-5/8"–13"; width 11-1/4"–13".
2.Motor & ESC
Open motor. Open ESC.
3.Battery
Any ROAR-approved 7.4V hard-case LiPo, 4.22V/cell max.
4.Body
Molded one-piece body from the approved list (C&M, Losi, Ofna, RJ Speed, Stalker, Onstat, etc.). Decking allowed; no side dams. Rear spoiler 3" max from deck, triangle end caps.
5.Wheels & tires
17mm buggy wheels. Any 1/8 street-tread rubber tire; traction compounds legal.
Version history
v1Published.
Jul 28, 2026