This is a replacement Traxxas Differential Gear Set, and is intended for use with the Traxxas XO-1. This Gear Set includes spider gears (2), output gears (2), a spider gear shaft, and carrier support.
Compatability:
Traxxas Rally
Traxxas Slash 4x4 Ultimate
Traxxas Telluride 4x4
Traxxas XO-1