CNC-machined highest-quality aluminum RIGHT C-hub for ARS suspension system. Caster pre-set at 4 levels. Generates maximum traction. Recommended for very-low-traction conditions. While the wheelbase will likely to be shortened a whole lot using this setting, it is strongly recommended to lengthen the trunk wheelbase by going the trunk hands fully back. Machined from premium Swiss 7075 T6 aluminum and black coated. Engraved with "4R" for easy identification. Includes two nylon bushings. The C-hubs are available in standard caster perspectives (0°, 2°, 4°).