BBMods Raceway rules
Losi 22S Sprint Spec Rules
v1Class RulesLosi SprintEffective Jul 28, 2026· Updated 3 months ago
Summary of recent changes
Current class specification.
Spec sheet
Governing
- Notes
- Approved battery packs SPMX-1087, SPMX50002S30H5, or SPMX52S30H5. Shock/diff oil open, Losi springs only, no added weight, no TLR tuned parts. Stock spur LOS232038/pinion TLR332020.
Motor & ESC
- Motor type
- Stock / sealed
- Spec motor
- Spektrum SPMXSM4800 (fan on waterfall)
- ESC
- Spektrum SPMX-1106
Tires
- Spec tire
- Losi Hoosiers Soft (LOS-2442/2430) or Hard (LOS-2418/2425)
Weight & body
- Body
- Stock cage and panels, stock wings (nothing removed)
1.Body & wings
Stock cage and panels (any color), painted or decals. Stock wings. All nerf bars, driver figure, and interior — nothing removed.
2.Electronics
Stock: ESC SPMX-1106, motor SPMXSM4800 (fan on waterfall), servo SPMS684, spur LOS232038, pinion TLR332020, RX SR215, TX SLT2/SLT3.
3.Battery
SPMX-1087, SPMX50002S30H5, or SPMX52S30H5.
4.Tires & setup
Losi Hoosiers Soft (LOS-2442/2430) or Hard (LOS-2418/2425). Shock/diff oil open, Losi springs only, no added weight. No TLR tuned parts.
Version history
v1Published.
Jul 28, 2026