HPI Racing optional Sprint ball differential maintenance set. Pre-assembled differential is ready to install in the front or rear of the Sprint. The hubs are constructed of metal. Pulley features plastic construction. Black in color.
This product includes one assembled ball differential and one instruction sheet. Fully adjustable for fine-tuning to track surface.
Pulley Specs 32 teeth Diameter at teeth: 30mm (1.18") Overall Length: 59mm (2.322")
Requires: Installing into vehicle
Much better than original.
I've buy this part because is very easy to lock the diff to drift run with my sprint 2.