Designed for use with 400XT Aero and 400XTR Rapid Aero foot packs * Included mounting brackets are vehicle specific/vehicle mounting points specific, ensuring a compatibility * Fit Kits contain four custom fitted thermoplastic footpads and PEBAX coated brackets, which help dampen vibration and protect your cars finish * Simple to follow directions included * Kit components are easy to remove when vehicle rack is not in use