The Fastr-X is Tioga's most versatile race tyre to date. Using increased strategic 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 never before. 60 TPI Casing UTC Rubber Compound Steel Bead 20 x 1.85 (O.

D. 515mm): 385g 20 x 1.75 (O.

D. 507mm): 340g 20 x 1.60 (O.

D. 494mm): 325g 20 x 1-3/8 (O.

D. 530mm): 350g 20 x 1-1/8 (O.

D. 516mm): 330g Colour: Black; Size: 1-3/8", 1.85", 1-1/8", 1.6", 1.75"