Extra Hard Steel 5mm Bore 1mod Pinion 18T (RRP1218)

This extra-hard steel pinion features a 5mm bore and 1.0 module, with 18 teeth, designed for brushless RC motors. It fits 5mm motor shafts and is compatible with most 1/8-scale nitro spur gears. A 4x4mm set screw is included to secure the pinion in place.

Mounting requires a 2mm hex key (not included) to tighten the set screw. For motors with a 1/8" shaft, a 5mm-to-1/8" reducer sleeve is required to complete the fit and ensure proper gear engagement.