The MotoSport.com Pirelli Scorpion Rally STR Tire Combo includes ONE Front and ONE Rear Pirelli Scorpion Rally STR tire with the following features: The new knobbly enduro on/off tire for adventure without limits. Technological innovations provide traction on dirt, stability at high speeds, on-road handling agility and grip in all riding conditions. A new compound, with a high content of silica, offers increased grip on both dry and wet surfaces, stability and a superior resistance to abrasion. Increased width and length of the tire's contour makes a larger contact patch for better stability. Blocks are longer and wider, and the longitudinal distance between each line of knobs has been reduced to increase the contact patch, without compromising off-road traction. Heat, generated by high speed, is distributed across a wider surface to prevent knob tearing.