This Robinson Racing Products pinion gear features 21 teeth cut to 48 pitch, making it a direct fit for 48P drivetrain setups. The hardened metal construction is designed to resist wear under demanding use. It includes a set screw for secure motor shaft mounting. Features: 21-tooth 48 pitch pinion Hardened metal construction Includes set screw For 48P electric drivetrain systems 7/7/26 cs