ARA310972 25T Mod1 Safe-D5 Pinion Gear

The ARA310972 25T Mod1 Safe‑D5 Pinion Gear is a precision steel pinion gear for radio‑controlled vehicles and other hobby drivetrain systems. It has 25 teeth with a Mod1 gear pitch, allowing it to mesh accurately with matching spur gears for smooth and reliable power transfer. The Safe‑D5 design features a D‑shaped bore that fits a 5 mm motor shaft, helping maintain drive and braking engagement even if the set screw loosens. It also includes a threaded set screw and an E‑clip to secure it on the motor shaft, and is built to handle high‑speed rotation and torque in demanding RC use.

Includes

1 x 25T Mod1 Safe-D Pinion Gear

1 x Set Screw - M4 x 4mm

1 x E-Clip - 3.2mm

Features

Strong and durable steel for long-lasting performance in extreme RC conditions - Precision manufactured wide tooth profile for smooth operation - 'D' shaped hole to match motor shaft profile so drive and brakes are not lost if the set-screw backs out - Suits 5mm motor shaft diameter - Precision manufactured threaded set-screw hole - E-clip supplied for motor shaft pinion retention