Traxxas 7644 Gear, 9-T pinion / set screw

9-tooth pinion gear. Traxxas pinion gears let you fine-tune the performance of your Traxxas model. Changing gear ratios can help balance acceleration and top speed for different running conditions. Please consult your owner’s manual for more information on recommended gearing options for your specific model. Includes motor mount screws and spacer.