Built for the RV Life, Made for Anyone. Whether you're an RV full-timer, an enthusiast or someone with a 2 in. receiver, the SuperClamp HD bike rack hitch has your bike transport covered. This heavy-duty hitch bike rack 2 bike design features all the same specs as our top-selling SuperClamp EX bike rack for SUVs, including dual wheel-clamping hooks, tilting capabilities and light-grabbing reflectors - all built on a dedicated 2 in. receiver base. Proven to stand up to miles on the road, this RV-compatible hitch-mount bike rack is as rugged as they come. Life with the RV just got a little better with the SARIS SUPERCLAMP HD bike rack for car 2 bikes design. Material: Steel.