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