Tread pattern features blocks molded left to right asymmetrically providing stability during braking and cornering Center blocks deliver great traction and improved wear on hard ground Unique knob and groove tread design offers exceptional braking and stability through intermediate conditions Provides excellent grip in varying conditions Tire sizes 60/100-10 and 60/100-12 are speed rated J for speeds up to 62 mph Tire sizes 60/100-14, 70/100-17, 110/100-18, 70/100-19, 80/100-21 and 90/100-21 are speed rated M for speeds up to 81 mph Tube Type Not for highway use Available in the following dirtbike tire sizes: 60/100-10, 60/100-12, 60/100-14, 70/100-17, 110/100-18, 70/100-19, 80/100-21 and 90/100-21