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Loco Joe's RC Speedway rules

Losi 22S Late Model

v1
Class Rules1/10 Losi Dirt Late ModelEffective Aug 12, 2026· Updated 2 months ago

Summary of recent changes

Initial class rules from track.

Spec sheet

Governing
Notes
ROAR approved 2-cell hard case battery; stock gearing 20T pinion/84T spur 48p; front purple/rear orange springs; servo, ESC & motor must remain stock; tires must be dried.
Motor & ESC
Motor type
Stock / sealed
ESC
Stock
Battery & power
Cells
2S
Hard case
Required
Tires
Spec tire
Stock Losi (standard or soft) + inserts only
Tire additive
Allowed
Weight & body
Body
All factory Losi body panels incl. driver
Chassis & Suspension
Chassis
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 & Electronics

Any ROAR approved hard case 2C battery. Battery connector may be changed. Radio and receiver can be changed. Servo and ESC must remain stock. Motor must be stock.

3.Gearing

Stock gearing only: 20T pinion, 84T spur 48 pitch. (Caliper readings: 11.2 mm pinion, 45.2 mm spur.) Gear cover must be removed.

4.Chassis & Body

No cutting, removing or lightening of parts unless stated in the rules. All stock Losi factory parts must be used. All factory body panels must be installed including the driver.

5.Suspension

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.

6.Tires

Stock tires (standard or soft) and inserts only. Tire compound may be used but tires must be dried to not leave a trail on the track surface.

Version history

v1Published.
Aug 12, 2026