High Road R/C Raceway rules
1/12 Losi Dirt Late Model Rules
v1Class Rules1/12 Losi Dirt Late ModelEffective Jul 28, 2026· Updated 3 months ago
Summary of recent changes
Current class specification.
Spec sheet
Governing
- Notes
- 7.4V packs (Spektrum/Gens Ace/EcoPower). Motor box stock. Exotek CVD allowed.
Motor & ESC
- Motor type
- Stock / sealed
- ESC
- Stock (Hobbywing QuicRun 1625 brushed if radio changed)
Battery & power
- Battery chemistry
- LiPo
- Cells
- 2S
- Max voltage
- 8.44V
Tires
- Spec tire
- Proline Goodyear Eagle dirt or JConcepts Dirt Trac
Weight & body
- Body
- Dirt late model (McAllister Batesville/Greenville, Shark Slammer, Proline Tombstone); 3/4" max spoiler
Chassis & Suspension
- Chassis
- Box-stock Losi NASCAR or Asphalt Late Model chassis
1.Chassis
Box-stock Losi NASCAR or Losi Asphalt Late Model chassis. Stock pinion (ARA311205)/spur (ARA311196). Motor and servo box stock. Exotek CVD kits allowed.
2.Radio
Radio/receiver may be changed; if so, only the Hobbywing QuicRun 1625 1/18 brushed ESC (HWA30120000) is allowed.
3.Battery
7.4V — Spektrum (SPMX142S30H2), Gens Ace (GEA172S35E2GT), or EcoPower (ECP-3145); 8.44V max.
4.Body
Dirt late model: McAllister Batesville (259)/Greenville (269), Shark RC Slammer, or Proline Tombstone (PRO373717). 3/4" max spoiler from deck.
5.Tires
Proline Goodyear Eagle dirt (PRO1030310) or JConcepts Dirt Trac (JCO4194-3053916).
Version history
v1Published.
Jul 28, 2026