Thule Helium Aero Bike Hitch Carrier Ultra-Light Aluminum is nearly half the weight of most hitch racks, for easy handling, installation and removal Patented Hold Fast Cradles with RDT (Road Dampening Technology) secure the bike to the rack while absorbing road shock No-Sway Cages with RDT prevent contact and absorb road shock for frame protection. Load apacity : 110 pounds Integrated Locking Cable and AutoAttach Lock Knob lock the bike to carrier and carrier to vehicle Sleek Aero-Design improves ground-clearance and increases distance between bikes for maximum protection If you have a bicycle with a non-conventional frame, such as a woman's, child's, or full-suspension bike, you may need a frame adapter to carry your bike on a hanging-style rear mount bike rack. Thule frame adapter: 982XT