Extra Hard 14 Tooth, 5mm Bore Mod 1

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. They are available in a variety of tooth count options to fine tune the torque and top speed of your model. Package includes one pinion gear and one 4x4mm set screw