XR1 Expert is the fast-rolling, race-worthy, Tubeless Ready cross country tire engineered for quickness on dry and dusty trails. Lead the pack with XR1's lightweight rubber compound, tightly spaced central knobs for predictable cornering, and an open outer tread design for high-speed traction and grip on dusty surfaces. Key features - Fast-rolling and predictable cornering - Excels in hardpack and loamy conditions - Use Bontrager TLR sealant for worry-free setup and puncture protection - Inner Strength sidewall protection is lightweight, supple, and strong