Rubber compound engineered for high grip and long lasting tread water Tire sizes 5.10-17 and 4.10-18 are 4 ply rated Tire sizes 4.50-18, 5.10-18, 100/90-19 and 110/90-19 are 6 ply rated Aggressive 4/5 knob pattern provides traction in a variety of terrain Tire is tube type For most modern and vintage mx and off-road motorcycles Old school design adds flavor to vintage motorcycles Meets or exceeds DOT standards Available in the following motorcycle tire sizes: 5.10-17, 4.10-18, 4.50-18, 5.10-18, 100/90-19 and 110/90-19.