Hot Racing Super Duty Differential Lock Hub Spool, intended for use with Traxxas 2WD Slash, Stampede and Rustler vehicles as an upgrade. This part replaces the differential gears for a locked differential and is recommended for off-road use only.

Features:
NOTE: Use both case halves. Do not need pins inside differential, but if you want to install the pins the design has been updated to allow you to do so.