GPM MG217T/0.5M 40Cr 17T Motor Gear for RC Motors  [MG217T/0.5M]

Motor Pinion Gear 17T (0.5M)

This GPM MG217T/0.5M motor gear is an RC-scale pinion designed for electric model drivetrains, offering a 17-tooth profile with a 0.5mm module and a 2.2mm motor bore. The part is manufactured from 40Cr steel and receives a hardened black treatment to improve surface wear resistance compared with common stock gears.

The gear features a round-shaped motor hole and is retained using two 3x3 set screws for secure attachment to compatible motor shafts. Before purchasing or fitting this gear check that your motor uses a 0.5mm module and a 2.2mm bore to ensure correct meshing and shaft fit.

In tuning and maintenance the MG217T/0.5M serves as a direct replacement pinion to adjust gear ratios or replace worn teeth; its hardened surface helps extend service life under normal RC use but does not change overall gear geometry, so verify mesh and backlash after installation.