4 Rocks rules
Losi 22 DLM Rules
v1Class Rules1/10 Losi Dirt Late ModelEffective Oct 16, 2026· Updated 7 days ago
Summary of recent changes
Winter Rumble classes and rules (Oct 2026).
Spec sheet
Governing
- Notes
- Spec class: stock electronics, gearing and battery; Losi springs only; no added weight; no TLR tuned parts.
Motor & ESC
- Motor type
- spec
- Spec motor
- Stock SPMXSM4800
- ESC
- Stock SPMX-1106
Battery & power
- Battery chemistry
- LiPo
Tires
- Spec tire
- Losi Hoosier soft/hard (LOS-4247)
Weight & body
- Body
- Stock body, nothing removed
1.Body
Stock body, any color. Panels can be painted or decaled. Nothing can be removed.
2.Tires & wheels
Losi Hoosiers, soft or hard compound (LOS-4247).
3.Electronics
ESC: stock (SPMX-1106). Motor: stock (SPMXSM4800), fan on the waterfall allowed. Servo: stock (SPMS684). Receiver: stock (SR215). Transmitter: SLT2 or SLT3.
4.Gearing
Spur: stock (LOS232038). Pinion: stock (TLR332020).
5.Battery
Stock only: SPMX-1087, SPMX50002S30H5 or SPMX52S30H5.
6.Suspension
Shock oil and diff oil open. Losi springs only. No added weight. No TLR tuned optional parts.
7.General
Tech table in place for events. Tire prep is allowed.