Kenda John Tomac Signature Series Nevegal Mountain Bike Tire Downhill wire bead version has 2 ply construction and STICK-E Compound for better grip Cross Country folding bead version is single ply with STICK-E Compound or DTC (Dual Tread Compound) New FREERIDE wire bead version is single ply, Stick-E and added Butyl insert for extra strength and durability