We took the tread design of the s works fast trak 2bliss ready tyre a step further by manipulating each knob with fe analysis paired with extensive rider feedback and design experience the result is a xc tyre with less rolling resistance and more traction all in a lightweight package casing 120 tpi bead foldable butyl wrapped bead 2bliss ready compound 60a 650b x 20 psi 35 65 approximate weight 490g