With the XR2, legendary tyre designer Frank Stacy provides another race-proven mountain bike tyre design for loose-over-hardpack trails. The Comp offers a strong, high-value combination of cornering & efficiency. Key Features Staggered knobs increase traction Confident cornering with multi-edge shoulder knobs Sipe & dimple design increases traction on changing terrain Versatile, fast & predictable Excels in loose over hardpack & loamy conditions