Extra Hard Steel 5mm Bore 19 Tooth Pinion (RRP1219)

Extra-hard steel pinion gear for RC car drivetrains, featuring a 5mm bore and a 1.0 module. The 19-tooth pinion is designed for brushless motors and fits 5mm motor shafts, pairing with most 1/8-scale nitro spur gears for a durable, precise drive.

Includes a 4x4mm set screw; tightening requires a 2mm Allen wrench (not included). For motors with a 5mm shaft, this pinion is ready to install; for 1/8-inch shaft motors, a 5mm-to-1/8-inch reducer sleeve is required to adapt the shaft. Built from extra-hard steel to withstand demanding use and deliver reliable performance in common RC car setups.