Take four bicycles with you on your next road trip or camping trip with the Elevate Outdoor RV Bike Rack. This four-bike bumper bike carrier is designed with a heavy-duty tubular steel frame and rust-preventative black powder coat finish. Unlike other carriers that may not be tested or rated for RV use the Elevate Outdoor carrier provides a safe effective means for securing and transporting bicycles on RV campers. Installation is simple and takes only minutes. The carrier rack fastens to 4in to 4.5in RV bumpers using the included U-bolts and secures bikes with the included L-shape tie-down bracket.