StampedeRustlerBanditSlash Oversized Alum. Front Knuckle (Blue) Using high quality CNC machined aluminum, these oversized Aluminum Front Steering Knuckle greatly increase the strength of your front suspension, while adding great looks to your Traxxas electric StampedeRustlerBanditSlash & Drag 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.