This Robinson Racing Products pinion gear is a 13-tooth, 32-pitch hardened metal replacement designed for a range of Associated RC vehicles. The hardening process increases wear resistance compared to standard pinions, helping the gear hold up under repeated use. Includes a set screw for securing the pinion to the motor shaft. Features: 13-tooth count 32 pitch (0.8 mod) sizing Hardened metal construction for increased durability Includes set screw 7/7/26 cs