Fits 26", 27.5"(650B) & 700C Wheels w/ Disc Brakes Our toughest tubular aluminium rear rack designed for heavy-duty, long-distance touring. Specifically developed for bikes equipped with disc brakes. The integrated sidebar provides a lower pannier attachment point-allowing more space for cargo on the rack top. QuickTrack® is compatible for use with any MTX TrunkBag, rear basket and pannier bag.