The Specialized Slaughter Grid 2 Bliss Ready tyre has been designed for heavy-pedal, hard-pack riding—receiving vertically stepped knob shapes for more knob core stability & additional biting edges. Fast courses on hard-packed ground require a light, fast tyre centre to keep speeds high, but must also keep the speed through loose sandy corners & track well under hard braking. The GRIPTON compound improves high frequency damping, better attaching the tyre to the ground over small bumps & rough sections alike. This also means that the low frequencies of the rolling tyre deflections pass through unfiltered, leaving no energy to be absorbed & keeping your speed high. Casing: 60 TPI Bead: Foldable Butyl wrapped bead = 2 Bliss Ready Compound: GRIPTON 650b x 2.3"; PSI 25-50; approximate weight 825g 29 x 2.3"; PSI 25-50; approximate weight 860g