The Terra Force-MX SM features a specially designed front and rear tread pattern designed to ensure optimal traction on soft surfaces with its tread knobs digging deep into the ground to improve acceleration, cornering and braking without loss of traction Designed for motocross racing on soft to medium terrains providing class leading traction, control and durability High performance soft rubber compound for outstanding traction and specially designed carcass for optimum control It is identified by its characteristic yellow and red stripes NHS (Not for highway service).