Topeak beam rack ex mtxa lighter duty version for mtb and commuter use improved qr mechanism is more secure and easier to use compatible with all mtx trunk bags 15lbs carrying capacity includes hidden storage tray rubber bungee and safety reflector features storage tray rubber bungee redlite mount tail light mount bag compatibility mtx series aluminium beam plastic cargo deck bag max weight 7kgs15lbs size 508 x 127 84cm weight 675gbuy topeak accessories from chain reaction cycles