Iowa Fast Track RC rules
Mod 4WD Short Course Truck Rules
v1Class Rules1/10 4WD SCTEffective Aug 16, 2026· Updated 2 months ago
Summary of recent changes
Published (2025 Iowa Fastrack classes).
Spec sheet
Governing
- Notes
- Battery: 6-cell NiMH or 2S hard-case LiPo
Motor & ESC
- Motor type
- Modified brushless
- Motor turn
- Modified / open
- Spec motor
- Any 540/550 brushless
Battery & power
- Battery chemistry
- Any
Tires
- Spec tire
- 2.2/3.0 square-lug (no 1/8 buggy tires)
Weight & body
- Body
- Any short course truck body
Chassis & Suspension
- Chassis
- Any 4WD short course truck (Tekno/TA/TLR/Slash 4x4)
1.Who it’s for
Intermediate to expert racers — 4WD trucks required, realistic looks with the horsepower to match.
2.Chassis
Any off-road 4WD short course truck chassis (e.g. Tekno, Team Associated, TLR, Traxxas Slash 4x4).
3.Motor
Any 540- or 550-based brushless motor; 550-size or 4-pole motors are common.
4.Batteries
6-cell NiMH or 2-cell hard-case LiPo.
5.Tires & body
2.2/3.0 wheels/tires — square-lug styles work well. 1/8 buggy tires are NOT allowed. Any short course truck body.
Version history
v1Published.
Aug 16, 2026