Extra Hard Steel Pinion Gear 5mm Bore Mod0.8 12T (RRP8712)

Extra Hard Pinion Gear for brushless RC motors, designed to deliver long-lasting, high-performance reliability with a 5mm bore and 12 teeth. It is built from high-carbon steel and precision machined, then stamped with the tooth count for quick identification. A 4mm set screw is included, with a 2mm Allen wrench (not included) fitting the screw for installation.

Designed to run on 5mm motor shafts, this pinion is suitable for cars using a 5mm shaft. For 1/8" shaft motors, a 5mm to 1/8" reducer sleeve is required. Note that 32 pitch gears and 0.8 module gears can be used together without adverse effects such as increased noise or wear, though 0.8 module gears have a slightly larger outside diameter per tooth (about 0.00027 inches).