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Battlefield Raceway rules

Losi Sprint (Box Stock)

v1
Class RulesLosi SprintEffective Aug 12, 2026· Updated 3 months ago

Summary of recent changes

Initial rules from track.

Spec sheet

Governing
Notes
Stock 20T/48P pinion and 84T/48P spur; max battery weight 350g
Motor & ESC
Motor type
Stock / sealed
Spec motor
Stock 3300kv
ESC
Stock Spektrum Firma 45 brushless smart lite
Battery & power
Max voltage
8.44V
Hard case
Required
Tires
Spec tire
Stock Losi tires only (soft or hard)
Weight & body
Body
Stock body, stock cage, stock front and top wings
Chassis & Suspension
Chassis
Stock aluminum chassis (no notching/modifying)

1.Electronics

STOCK 3300kv motor. STOCK Firma 45 brushless smart lite ESC.

2.Servo

STOCK servo (part# SPMS684).

3.Controller

STOCK controller (part# SPMSLT320).

4.Battery

Any 5200Mah hard case battery. Must have Deans, XT60, XT90 etc, NO bullet style connector. Max battery voltage 8.44 volts. Max battery weight 350 grams.

5.Chassis

STOCK aluminum chassis. NO notching or modifying of the chassis allowed.

6.Suspension

STOCK shocks and springs only. Springs (part#LOS-2604 front / #LOS-1885 rear). Shocks: stock aluminum housing, pistons, shafts, caps, spring buckets.

7.Transmission

STOCK transmission. STOCK internal gears. STOCK pinion (20T, 48P). STOCK SPUR (84T, 48P).

8.Tires

STOCK tires only. Soft (part#LOS-2430 front / #LOS-2442 rear). Hard (part#LOS-2418 front / #LOS-2425 rear).

9.Body

STOCK body only. STOCK cage only. STOCK wings (front and top wing).

Version history

v1Published.
Aug 12, 2026