4 Rocks rules
1/10 Midwest Modified Rules
v1Class RulesMidwest ModifiedEffective Oct 16, 2026· Updated 7 days ago
Summary of recent changes
Winter Rumble classes and rules (Oct 2026).
Spec sheet
Governing
- Governing body
- DODC
Motor & ESC
- Motor type
- Open
- ESC
- Open
Battery & power
- Battery chemistry
- LiPo
- Cells
- 2S
- Hard case
- Required
Tires
- Spec tire
- Quasi Speed
Chassis & Suspension
- Chassis
- DODC chassis and body rules
1.Motor & ESC
Open motor, open ESC.
2.Battery
2-cell hard-case LiPo.
3.Chassis & body
DODC rules for chassis specs and body.
4.Tires
Quasi Speed.
5.General
Tech table in place for events. Tire prep is allowed.