Yakima Raptor Upright Rooftop Bike Rack For Round, Square Or Aero Bars. Includes mighty mounts for installation with factory or aero bars as well as adapters for use on round or square bars. You will need to provide wrench (not included) to tighten/loosen bolts for installation. PRODUCT DETAILS —Carries your complete bike – no front wheel removal necessary —Great for bike frames with traditional diamond frame geometry and bikes with fenders —Fits round, square, factory and aerodynamic crossbars —Fits 1” to 3” round diameter bicycle downtubes (no aero or squared downtubes) —Accommodates disc brakes, thru axles and full suspension —Lock bike to mount with SKS Lock Cores (sold separately) —1 bike up to 30 lb at minimum of 16” Crossbar spread —Accommodates bike wheelbases up to 48” Minimum Crossbar Spread 16.00in Maximum Crossbar Spread 38.00in