2mm shaft diameter Brass Or Hardened steel pinion gears in Mod.5 Pitch. Some aftermarket spur gears are Mod.5 or Mod.4 MAKE SURE TO CHECK! Gears are sold 1 per purchase.
These are press on gears, You must either use a pinion gear tool or know what you are doing to install these or you may ruin your motor. Use at your own risk and skill level.
These are for the 2.0mm shaft motors such as the Mofo Rc BAM motor, The Big Block or PN90 Motor, The Surpass Rocket motor, Other Brushless or brushed 130 or 180 size motors.
