The CST Pulse MXR has even more adrenaline-pumping traction than the original Pulse is known for. Front tires have increased traction for better steering performance, providing predictable cornering and sliding characteristics. Improved wear characteristics give insurmountable durability. Two rear compounds available for hard and soft terrain applications. Increased traction and performance on intermediate-hard terrain. Improved wear characteristics. Pulse MXR CS13 CS13, 20x6-10, Bias, Front, 4 Ply, Non-Directional