The limited edition pink/black 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 the many cyclists around the world who have experienced countless adventures 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, offering low rolling resistance and consistent grip across a wide temperature range, from near-freezing to scorching heat. TuffTex is a revolutionary structure developed exclusively for GravelKing tires. With 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 experienced technicians using the most advanced materials. This ensures exceptional production quality and performance. Note: For installation, Tubeless Ready tires require tubeless-compatible rims/wheels, tubeless valves, tubeless rim tape, and sealant. Puncture sealant is not necessary for UST Tubeless tires but is recommended for increased puncture protection. Installing tubeless tires is not always easy and should only be performed by qualified personnel.