The ASSOCIATED RC18T Steel & Aluminum Ball Differential by GPM AR100S is designed with focus on durability and tunability for hobbyist upgrade projects. Compatible with Associated RC18T, Traxxas Latrax Rally, Latrax Stadium Super Truck and Teton, the assembly includes ball bearings, thrust washers, a delrin pulley and aluminum output cups to provide repeatable adjustment and reduced wear. The adjustment screw allows methodical tuning of differential action to match driving conditions and setup preferences.