37T Mod1 Safe-D5 Pinion Gear (ARA311132)

The 37T Mod1 Safe-D5 Pinion Gear is a rugged steel component for RC power systems. It transfers motor torque to the drivetrain, delivering reliable performance and smooth engagement in demanding conditions.

Designed to fit 5mm motor shafts, it features a wide-tooth profile for smooth operation and a D-shaped bore that matches the shaft to help prevent loss of drive if the set-screw backs out. The pinion also has a threaded set-screw hole for a secure mount and comes with the 37T gear, a 4mm M4 set screw, and a 3.2mm E-clip for retention on the shaft.