Resurrected from the archives yet modernized with the same fe analysis as the new fast trak we39re bringing the ground control back for the masses with adaptive tread technology we39re now able to offer xc trail riders the most fastest grippy tyre for all conditionsgt casing 120 tpi gt bead foldable gt butyl wrapped bead 2bliss ready gt compound 60a gt 26quot x 21 psi 35 65 gt 29quot x 21 psi 35 65