Gears

Robinson Racing Products . RRP 14T 5MM 1/8 XTR HARD 1.0 MOD

Extra Hard Steel 5mm Bore (1.0 module) Brushless Motor Pinions. One 4x4mm set screw included. 2mm allen wrench (not included) fits the 4mm set screw.
Compare

Robinson Racing Products . RRP Extra Hard Steel .8 Mod Pinion Gear 5mm (12)

Robinson Racing Extra Hard Steel 5mm Bore .8 Mod Pinion Gears fit brushless motors with a 5mm shaft and are intended for use with the Traxxas E-Maxx model #3905.
Compare