19T Motor Gear MG319T/0.5M 40Cr Steel Pinion by GPM  [MG319T/0.5M]

This 19T motor pinion fits motors specified for a 0.5mm module and a 3.175mm tooth diameter, and features a round bore secured with two 3x3 set screws to make swapping simple.

Manufactured from 40Cr steel with a hardened black finish, the pinion is intended to resist wear and provide consistent engagement in typical RC drivetrains. Use it as a like-for-like replacement or to tweak gear engagement.

Confirm your motor uses module 0.5 and a 3.175mm tooth diameter, and check shaft alignment and bore seating so the two 3x3 set screws can clamp correctly.