replaces Axial AX31421 kit

2x Mud Slingers 1

making them more consistent and makes your vehicle easier and more predictable to drive

The Kyosho UM320C is a steel pinion gear with 20 teeth in a 1/48 pitch

Fitment depends on the battery compartment dimensions and selected connector

Powerhobby 550 Size 21T Brushed Motor Reverse Rotation FOR Traxxas TRX-4 Sparko Parts replaces Axial AX31421 kitPowerhobby 550 Size 21T Brushed Motor Reverse Rotation Features: Excellent torque and driveability Compatible with any brushed ESC Removable Replaceable rotor Precision engineered for maximum energy conversion Specs : Turns: 21T Watts: 600W RPM: 12800 Voltage: 2S LiPo 6 9cell NiMH Current: 1. 42A Resistance: 0. 0043 Length of extend shaft: 16. 5mm Shaft diameter: 3. 175mm Weight: 8 Ounces