17T 0.8Mod Safe-D5 Pinion Gear (ARA311000)

This Safe-D5 17-Tooth Pinion Gear, 0.8 module, is a rugged steel pinion designed for RC vehicle drivetrains. It meshes with a compatible spur gear to establish the gearing, and its D-shaped bore fits a 5mm motor shaft to help prevent rotation if the set-screw backs out. The package includes an M4 x 4mm set screw and a 3.2mm E-clip for secure shaft retention.

Constructed from durable steel, it features a wide-tooth profile for smooth, reliable operation under demanding RC conditions. Precise manufacturing ensures proper mesh with 0.8 module spur gears and a 5mm motor shaft, making installation straightforward. The Safe-D design, together with the included hardware, helps keep the pinion secured during use, delivering dependable gearing for upgrades or replacements in sport or competition builds.