Tamiya 54062 Pinion Gear 48P 13T/14T/15T FEATURES: Designed to be compatible with the Tamiya #53929 27T Dirt Tuned Motor and the #53930 BZ Super Stock 23T Motor (TAMC1430) Metal construction;INCLUDES: One 13T pinion gear One 14T pinion gear One 15T pinion gear Three set screws L wrench;REQUIRES: Installation onto motor