Farmer City RC 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
- Stock battery (SPMX-1087 / SPMX50002S30H5 / SPMX52S30H5); spur LOS232038 & pinion TLR332020 stock; shock/diff oil open; Losi springs only; no added weight; no TLR tuned optional parts; servo SPMS684, RX SR215, TX SLT2/SLT3; fan allowed on waterfall; Farmer City RC Raceway
Motor & ESC
- Motor type
- Stock / sealed
- Spec motor
- Spektrum SPMXSM4800 (stock)
- ESC
- Stock Spektrum SPMX-1106
Battery & power
- Cells
- 2S
Tires
- Spec tire
- Losi Hoosier soft (LOS-2442/2430) or hard (LOS-2418/2425)
Weight & body
- Body
- Stock cage and panels; stock wings; must retain nerf bars, driver, interior
Chassis & Suspension
- Chassis
- Losi Sprint
1.Body
Stock cage (any color) and panels (any color); panels may be painted or use decals. Must run all nerf bars, driver figure, and interior — nothing may be removed.
2.Wings
Stock wings (any color). Panels may be painted or use decals.
3.Tires & wheels
Losi Hoosiers — Soft (LOS-2442, LOS-2430) or Hard compound (LOS-2418, LOS-2425).
4.Electronics
ESC stock (SPMX-1106). Motor stock (SPMXSM4800) — fan allowed on the waterfall. Servo stock (SPMS684). RX stock (SR215). Transmitter SLT2 or SLT3.
5.Drivetrain
Spur gear stock (LOS232038). Pinion gear stock (TLR332020).
6.Battery
Stock — SPMX-1087, SPMX50002S30H5, or SPMX52S30H5.
7.Setup
Shock oil open. Diff oil open. Losi springs only. No added weight. No TLR tuned optional parts allowed.
Version history
v1Published.
Jul 28, 2026