Smartfoot Technology works on the principle that simple is good, which means changing vehicles can be as simple as only getting another fitting kit. Traditional roof racks are built to suit only one mount type so buying another car almost invariably meant buying a whole new roof rack and starting again from scratch. Not the case with Smartfoot. Smartfoot fitting kits are totally interchangeable and fit both through and flush style Whispbars. They simply plug in from the bottom and turn your roof rack into a completely new one for the cost of just another fitting kit. So does this interchangeability mean the fittings are less than optimum No way, the fitting kits used in Smarfoot have been engineered for each specific vehicle to ensure a secure fit. Whatever vehicle you've got there is a Smartfoot fitting kit to suit. 100's of fitting kits are available to plug into the Smartfoot system making your Whispbar the most versatile roof rack in the world. Has your vehicle got fixed points No problem. Is it a clamp mount No problem. What about gutters No problem. All roof types are covered by Smartfoot Technology, and yes, even vehicles with roof rails. This flexibility can make your initial purchase go a whole lot futher, from vehicle to vehicle as you update. Whispbar with Smartfoot is a roof rack for life.