Now that you"ve invested in the ultra sleek, noise- and wind-reducing Yakima Whispbar crossbars to help transport your toys, you"ll need to attach them to your ride. Based on your vehicle model, you may need the Yakima Whispbar Fitting Kit to attach the suitable Smartfoot System to the roof rails. Product FeaturesCompatibility: Whispbar crossbarsLocks Included: Recommended Use: attaching bars to your vehicleManufacturer Warranty: lifetime