This Associated Factory Team steel pinion gear is designed for 1:8 scale Associated electric vehicles running a Mod 1 gear pitch. It features 17 teeth and is sized for a 5mm motor shaft, secured by the included set screw. A direct factory replacement for builders looking to tune gear ratios or replace worn drivetrain components. Features: 17-tooth pinion gear Mod 1 pitch for 1:8 scale drivetrains 5mm shaft bore Steel construction Includes set screw 7/7/26 cs