Pinion Gear 21T 0.5 MOD CNC 3.2mm Bore

A 21-tooth CNC pinion gear with a 0.5 module and a 3.2 mm bore, designed as a direct replacement for compatible RC kits. This precision gear ensures smooth power transfer from the motor to the drivetrain and reliable performance under demanding conditions.

Made from tough steel for long-lasting durability, it features a precise tooth profile for consistent meshing and a dedicated hole for the included M3 x 4 mm set screw on a 3.2 mm motor shaft. The package includes the 21T pinion gear and the matching set screw, providing a ready-to-install replacement for compatible configurations.