Complete system which also includes integrated roller conveyors in the rear supports to facilitate loading Completely assembled, ready for use. Suitable for tool-free mounting on most normal, aerodynamic, aftermarket and original equipment bars. The 4 supports are equipped with a spring system that allows them to automatically adapt to the shape of the canoe during loading. The supports are smooth and padded to support multiple types of canoes and kayaks and tiltable to carry other types of small transportable boats on the roof. Tie rods (front and rear) for greater stability while driving on the motorway. Compatible with the locking system with SKS locks