This 954mm/37.6? long, full-size Slimline II cargo roof rack kit contains the Slimline II Tray, Wind Deflector and 4 Foot Rails to mount the Slimline II Tray to your Porsche 911. It easily installs using the existing factory mounting points. No drilling required.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 Racks are backed by a Limited Lifetime Warranty* * 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.