Traxxas X-Maxx WideMaxx Upper Suspension Arms. These suspension arms are intended for the front or rear of the Traxxas X-Maxx when equipped with the optional WideMaxx suspension kit (TRA7895). Made from a strong composite material, these are designed to hold up to the high loads found in off-road bashing. These are available in multiple color options to best match your build. Package includes two upper suspension arms.