High Road R/C Raceway rules
Losi 22S Limited Sprint Car Rules
v1Class RulesOutlaw Losi SprintEffective Jul 28, 2026· Updated 3 months ago
Summary of recent changes
Current class specification.
Spec sheet
Governing
- Notes
- Servo, spur, pinion, RX, TX all open; weight may be added; TLR tuned parts allowed (no carbon chassis); ASC ball cups/HD studs, Exotek slipper, Kimbrough/Exotek spurs; Losi springs only
Motor & ESC
- Motor type
- Stock / sealed
- Spec motor
- Losi SPMXSM4800 (stock, fan on waterfall)
- ESC
- Stock (SPMX-1106)
Battery & power
- Battery chemistry
- LiPo
- Cells
- 2S
- Max voltage
- 8.44V
Tires
- Spec tire
- Losi Hoosiers Soft/Medium, JConcepts Sprinter, or GFRP Quasi
Weight & body
- Body
- Stock cage/panels/wings, no Lexan; all nerf bars, driver, interior retained
1.Body & wings
Stock cage and panels (any color); painted or decals, no Lexan. Stock wings. All nerf bars, driver figure, interior — nothing removed.
2.Motor & ESC
Stock ESC (SPMX-1106) and motor (SPMXSM4800, fan on waterfall). Servo, spur, pinion, RX, and TX all open.
3.Battery
Any 2S LiPo, 8.44V max.
4.Tires
Losi Hoosiers Soft/Medium, JConcepts Sprinter, or GFRP Quasi.
5.Upgrades
Weight may be added. TLR tuned parts allowed (no carbon chassis); Team Associated ball cups (ASC92308)/HD studs; Exotek Slipper Eliminator (EXO2330); Kimbrough/Exotek spurs. Losi springs only. No other-brand upgrades.
Version history
v1Published.
Jul 28, 2026