700c, 27-Inch & 650c

Everything that the standard X1 offers, but with added protection for those particularly tough rides where there may be a greater risk of punctures. - Ideal for gravel, dirt, and rough pavement - TuffTex+ increases tire resilience with a dual layer of bead-to-bead TuffTex material, providing additional puncture resistance and heightened security in the most challenging conditions - BeadLock is engineered to accommodate a broader range of rims, including both hookless and clincher types. In most instances, mounting the tire can be effortlessly achieved with a standard floor pump - ZSG GRAVEL Compound is crafted from a proprietary ZSG (Zero Slip Grip) material to ensure remarkable resistance to temperature and weather fluctuations. This consistent rubber performance across a spectrum of temperatures provides lower rolling resistance and improved grip - Folding (Aramid) Bead - Tubeless and Hookless Compatible - Tubeless Ready up to 60 PSI

When speed and precise handling are essential for the race or ride, the X1 R delivers with its unique casing and race-tuned technology, ensuring you roll to your optimal finish. - Ideal for gravel, dirt, and rough pavement - TuffTex R provides bead-to-bead protection that represents Panaracer’s most supple and lightweight casing to date. This distinctive combination guarantees an exceptionally smooth ride, providing the lowest rolling resistance available in a Gravelking tire - BeadLock is engineered to accommodate a broader range of rims, including both hookless and clincher types. In most instances, mounting the tire can be effortlessly achieved with a standard floor pump - ZSG GRAVEL Compound is crafted from a proprietary ZSG (Zero Slip Grip) material to ensure remarkable resistance to temperature and weather fluctuations. This consistent rubber performance across a spectrum of temperatures provides lower rolling resistance and improved grip - Folding (Aramid) Bead - Tubeless and Hookless Compatible - Tubeless Ready up to 60 PSI