This 9T Mod1 steel pinion is designed to compliment the BS801-014 Mod1 spur gear upgrade for the Ground Pounder.  These gears can accept brushless power with ease!  This pinion fits all motors having a 5mm shaft.  If you have a 3mm shaft motor, you will also need our CPE-SHAFT53 reducer.

Note:  This pinion will provide much more torque versus the stock 12T Mod1 pinion, while losing some of the top-end speed for your truck.  Great for when running a higher power brushless system!