Losi Late Model Rules (2026)
v1Summary of recent changes
Universal Losi 1/10 Late Model box-stock ruleset (2026).
Spec sheet
- Notes
- Max 5200 50C battery, no bullets; stock gearing 20T pinion/84T spur 48P; stock bearings, no ceramic; factory springs (front purple, rear orange).
- Motor type
- Stock / sealed
- Spec motor
- Box stock Losi
- ESC
- Stock
- Battery chemistry
- LiPo
- Cells
- 2S
- Max voltage
- 8.44V
- Spec tire
- Stock Losi (standard or soft) and inserts only
- Chassis
- RTR Losi Late Model (stock out of box)
1.Overview
The Losi Late Model class is to remain stock out of the box, with the following specifications.
2.Battery
Maximum 5200 50C battery. ESC battery connectors can be changed — no bullets. Maximum battery voltage 8.44V.
3.Radio, Servo & ESC
Radio and receiver must be box stock. Servo and ESC must be stock. Stock servo saver or the supplied solid plastic servo horn only.
4.Motor & Gearing
Motor must be box stock. Stock gearing only: 20T pinion, 84T spur, 48 pitch (caliper readings: 11.2mm pinion, 45.2mm spur). Gear cover must be removed.
5.Chassis & Parts
No cutting, removing, or lightening of parts unless stated in the rules. All stock Losi factory parts must be used.
6.Springs & Shocks
Factory springs: front purple springs, rear orange springs (colors must be visible). Any shock oil may be used. No limiting of shock. No additional fans may be used.
7.Tires & Bearings
Stock tires and wheels (standard or soft) and inserts only. Stock bearings with black stock shields must be installed. No ceramic bearings.