This Slimline II rack kit contains all the components needed to mount the Slimline II cargo carrying rack to a Jeep JK 4 door including the Slimline II Tray (1425mm x 1560mm), the Jeep Extreme Pro Mounting System and a Wind Deflector. Drilling is required for installation. The JK Extreme Pro mounting system distributes the cargo weight to the Roll Bars using front mounted supports with bolted middle and rear brackets. This rack system allows you to quickly remove the freedom panels and to remove the hardtop with the rack attached to it. All Front Runner Rack Kits contain installation instructions as well as all the components needed to mount the Slimline II Tray to your vehicle. All Front Runner Dometic racks are backed by a 5‑year warranty* For further information on installation, please see the fitment instructions in the INSTALL tab * Note: A maximum driving speed of 130km/80mi per hour should be adhered to, when equipped with a Front Runner Roof Rack or Load Bar kit.