Increase the capacity of your Thule WanderWay cycle carrier with the Thule WanderWay 4th Bike Adaptor. This adaptor allows for easy mounting of bikes through detachable bike arms equipped with lockable Thule AcuTight torque limiter knobs that ensure optimal torque. The adjustable wheel holders with pump buckles make it simple to fasten wheels, and the easy-to-adjust rails that slide from left to right facilitate straightforward bike loading. Model number: TH911-7.