The limited edition pink/brown Panaracer Gravelking X1 is the fastest Gravelking of all time. It features an aggressive, fast profile and exceptional self-cleaning properties in muddy conditions. This tread design is a tribute to the Gravelking 10th anniversary and to the many cyclists around the world who have lived countless adventures and experiences with Panaracer. The Panaracer Gravelking X1 is equipped with the latest Panaracer technologies. The rubber compound boasts a specific gravel material formulation, starting with Panaracer's patented ZSG (Zero Slip Grip) material. ZSG ensures excellent resistance to temperature and weather conditions and offers low rolling resistance and consistent grip across a wide range of temperatures, from near-freezing to scorching heat. TuffTex is a revolutionary structure developed exclusively for GravelKing tires. Thanks to its soft casing and high thread count, TuffTex ensures long-lasting durability and provides precise puncture protection. This unique compound guarantees an exceptionally smooth ride and offers the lowest possible rolling resistance on a GravelKing tire. BeadLock: The tire bead fits various rims (including hookless ones) and in most cases can be mounted with a standard floor pump. Panaracer Gravelking tires are manufactured in Japan by expert technicians using the most advanced materials. This ensures exceptional production quality and performance. Note: For installation, Tubeless Ready tires require compatible Tubeless technology rims/wheels, Tubeless valves, Tubeless rim tape, and sealant. Puncture sealant is not necessary for UST Tubeless tires, but is recommended due to increased puncture protection. Installing Tubeless tires is not always easy and should only be performed by qualified personnel.