Can I make technical changes to the product? Technical modifications to any Thule product is prohibited. Doing so will void your product's warranty and Thule's liability. Can't find the answer you're looking for?Submit a support request Related articles Where can I buy Thule products? Are any tools needed for installation? Can I re-use my older roof rack setups? I would like to purchase the ‘One Key’ system. Can I choose a specific key number? What is Thule’s warranty policy?