Also, the bore diameter of the pinion gear shaft, please make sure your RC motor shaft has the same diameter. Hardened Steel Pinion Gear With Coupler 19T Carbon Steel Gear Traxxas 32P Hardened Steel Pinion Gear W/5mm Bore (11T) [TRA5641] - AMain Hobbies RC Hardened Pinion Gear 14T Steel Gear The gear pitch of the pinion gear, you must make sure your spur gear and pinion gear have the same pitch, otherwise the teeth will not mesh. Mount to Shaft: Slide the selected pinion gear onto the shaft and secure it in place with the provided screws. 1-[Good Feature]: Made of good quality hardened steel for durability. Adjust Mesh: Make sure to align the pinion gear accurately with the spur gear for efficient power transmission. About the product:This hardened steel pinion gear is perfect for RC model such as cars, trucks, drones or other models that require precise gear ratios and smooth performance. Easy to install:Select Gear: Select the appropriate gear based on the desired gear ratio. Precision-engineered gears with precise tooth profiles align the pinion gear exactly with the spur gear to prevent damage. Traxxas 20T Pinion Gear 0.8 Mod 32P for 5mm Shaft Hardened 32P Absolute Pinion, 14T Overview. Extra-hard 32 pitch pinions are a must for use with our steel spur gears and will last and last with plastic... 3-[Wide Application]: This hardened steel pinion gear is perfect for RC model vehicles such as cars, trucks, drones or other models that require precise gear ratios and smooth performance. SH Pinion Gear 32P 14T 5mm Shaft Each pinion is equipped with a set screw for easy installation. 5-[Tips]: Confirm compatibility with your RC model's specifications before installation.