The topeak uni super tourist dx for disc brake fat bike is the ideal pannier rack if you are wanting to tour for a couple of days this one size fits all aluminum tubular rear rack is equipped with adjustable legs to fit most 24 to 29 wheel mtb and 700c touring bikes with disc brakes this tough tubular rack is designed for heavy duty long distance touring the integrated side bar provides a lower pannier attachment point allowing more space for cargo on top of the rack the mtx quicktrack p