1/48 Motor Pinion 23T - Kyosho UM323C  [KY-UM323C]

1/48 Scale 23T Pinion Overview

The Kyosho UM323C steel pinion is a 23-tooth motor pinion intended for 1/48 scale RC drivetrains. As the interface between motor and spur gear, proper mesh and alignment are essential to maintain smooth torque transfer and limit gear wear.

Use this pinion for scheduled replacements or when adjusting final drive ratios to alter acceleration and top speed characteristics on compact electric chassis. Confirm motor shaft diameter and the attachment method prior to fitting. Establish a small gear mesh clearance, secure the pinion, and test at low throttle to ensure the drive engages without binding.

Care is minimal: inspect teeth for wear or damage, clear any debris, and replace the pinion if mesh is compromised. If noise persists, review spur gear condition and bearing play as part of drivetrain troubleshooting rather than changing the pinion finish.