Why two brands, tubus and Racktime?
tubus carriers are made of high-strength special steels. Carriers made of this material are, as long as they are constructed correctly and professionally produced, nearly indestructible. tubus carriers are the ideal carriers for medium and high weight travel luggage. Bike travellers, who spend their lives on their bike, usually prefer to fasten their luggage onto carriers from tubus.

Racktime produces exclusively carriers made of aluminium. In terms of its stability, aluminium will only be exceeded by steel. But the advantage of aluminium is that - by the use of extrusion-profiles (more details) - all system-components like baskets, bags and all other accessories can be easily attached to the carrier.