Extra Hard Steel Pinion Gear 5mm Bore Mod1.0 15T (RRP1215)

This extra-hard steel pinion gear features a 5mm bore, 1.0 module, and 15 teeth, purpose-built for brushless RC motors. It is designed to fit cars with a 5mm motor shaft and to mesh with most 1/8-scale nitro spur gears, delivering reliable power transfer in your gearing setup. A 4x4mm set screw is included, and a 2mm Allen wrench (not included) fits the screw for secure installation.

For motors with 1/8-inch shafts, a 5mm-to-1/8-inch reducer sleeve is required to adapt the shaft size and ensure proper engagement with the gear train.