S-Spec tires utilize Tioga’s ultra-lightweight CYLEX 120 TPI casing. Feather light and super supple, S-Spec tires conform better to track surfaces for buttery smooth runs. Lightweight folding bead only.
Sharing same state-of-the-art features as the FASTR, the FASTR REACT adds distinctive rows of paddle-like serrated shoulder treads designed to better “lockdown” the tire during hard acceleration to more efficiently transfer the power of each pedal stroke into forward momentum. React faster out of the gate with the FASTR REACT.