Associated brand optional 42T Differential Ring Gear for the RC8B3 Team Buggy Kit from Team Associated, ASCD0914. FEATURES: Hardened steel construction For use with the stock 13T pinion gear Installs in both front and rear gearboxes Two are required if rebuilding both gearboxes YOU WILL RECEIVE: 42T Differential Pinion Gear jxs 05/06/16 ir/jxs