Robinson Racing Extra Hard Steel 5mm Bore Mod1 Pinion gears were developed for 1/8 scale applications and fit most 1/8 scale nitro spur gears perfectly.

Robinson Racing 5mm Bore, 48 Pitch Machined Pinion Gears can be used on any car that uses a 48 pitch spur, when using a motor that has a 5mm rotor shaft.

Robinson Racing Extra Hard Steel 5mm Bore Mod1 Pinion gears were developed for 1/8 scale applications and fit most 1/8 scale nitro spur gears perfectly.

32 pitch pinions precision cut from hard steel alloy, lightened for reduced weight. 1/8 inch bore. One 5-40 set screw included.

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.