The specialized fast trak fat tyre is all about speed designed with the help of extensive rider feedback to create a fat tyre with less rolling resistance and more traction perfect for taking your adventures to the next level complete with a butyl wrapped bead that is tubeless ready specialized fast trak fat tyre features casing 120 tpi bead foldable butyl wrapped bead 2bliss ready compound 60a 26 x 40 max ride 15 psi max install 25 psi