The FASTR-X is Tioga`s most versatile race tire to date Increased strategical placement of Grip-Pods matched to multi-facet Nano Knobs on shoulder and sides Capped off with friction enhancing chemical etching over the central tread, FASTR-X strikes the rarefied balance of speed and control like none before Standard 27.5x1.5 584 Wire Bk/Blk 65 120 NoUPC/EAN/GTIN: 840511037740