This Slimline II 1/2 rack kit contains all the components needed to mount the Slimline II cargo carrying rack to a Jeep JK 4 door 2007-2018 including the Slimline II Tray (1425mm x 1358mm), the Jeep Extreme Mounting System and a Wind Deflector. This sophisticated, rugged, high performance, nearly indestructible rack system allows you to quickly remove the Freedom Panels and works with the hardtop roof on or with no roof at all.