The topeak roadie rx rack is ideal for road bikes without seatstays rack mounts giving you that extra bit of space for luggage on your rear end with a sleek and stylish design the roadie rack is constructed with hollow aluminium and engineering grade plastic which displays discrete but is very strong the rx quicktrack system that is compatible with the topeak rx trunkbag ex makes it quick and easy to attach and detach the bag when needed the topeak roadie rx rack installs easily with center