Using high quality CNC machined aluminum, these oversized Aluminum rear hub carrier greatly increase the strength of your rear suspension, while adding great looks to your Traxxas electric Stampede/Rustler/Bandit or the new Slash. Because of the increase in size of bearing for durability, we have included a full set of 5x11mm ball bearings (replacing the stock 5x9mm bushing) for improved efficiency of the rotating axle and durability.