hitch bike racks are a great way to transport your bikes. They are easy to install and provide a safe and secure way to transport your bikes. The Yakima EXO DoubleUp hitch bike rack is a great option for those who want to transport two bikes. It connects to the EXO SwingBase or EXO TopShelf (sold separately) for easy-to-access bike storage. The rack also fits most bikes, including fat-tire, mountain, road, hybrid, womensâ€™ specific, BMX and kids bikes as well as disc brakes, through axles, boost hubs and full suspension bikes. The DoubleUp also protects your bikes with its StrongArm hook, which secures bikes at the wheels and keeps painted surfaces and carbon frames untouched.