The Rhino-Rack VORTEX SX Series Locking Black, Raised Railing Mounted, Aero Crossbar, Car Roof Rack is designed for vehicles with factory raised railings. The VORTEX SX Series Aero Roof Rack includes vehicle specific aerodynamic cross bars, 4 feet, and security hardware to protect your racks against theft. Rhino's recommended length aero crossbars are included, vehicle specific and will fit your raised railings like a glove. The Rhino-Rack VORTEX SX Series Black Rack System is designed with superior aerodynamics, practical ruggedness and great looks. All Rhino-Rack carriers, attachments and accessories offered by The Rack Warehouse fit the Rhino Black Aero Crossbars.