Our most popular training tire modernized with tubeless technology and higher volumes for even more reliability and comfort the familiar diamond tread pattern keeps things rolling smoothly even as the pavement crumbles into gravel and hardpack dirt diamond knurled slick design maxxshield bead to bead protection dual compound rubber specification conditions hardpack cornering control 1 2 3 4 rolling efficiency 1 2 3 4 tpi 60 bead foldable ply construction single compound dual max psi