SMX 04 Rear Tire: The all new SMX 04 is a motocross tire designed for soft-to-intermediate terrain. It offers outstanding grip, precise slide control, superior bump absorption, and long-lasting durability. Designed for soft to medium terrain. Polygon blocks enhances straight line traction. Dual Stair side lugs optimizing lean angle and stability. Tire Specifications: Construction: Bias / tube-type.