Traxxas 4678 Spur Gear 78T
Traxxas' 48 Pitch spur gears are available in 78 and 81 tooth count options to fine tune the gear ratio for torque or top speed.
Effects of Spur Gear Changes
Decreased top speed
Use on smaller tracks for more punch
Use with larger pinion to get more overall torque, while maintaining the same gear ratio
Decreases acceleration, but smoother
Increases top speed