This 1156mm/45.5'' long, full-size, Slimline II cargo roof rack kit contains the Slimline II Tray, Wind Deflector and 2 pairs of Rail Grip Feet to mount the Slimline II Tray to the roof rails of your BMW X3 (2013-Current). This system installs easily with 4x4 ready feet that grip onto the existing factory/OEM roof rails. No drilling required.