Super fast, but nevertheless with a good grip, the X-King was developed with the Topeak Ergon mountain bike professional team. Despite pronounced studs, the X-King rolls off smoothly and very quietly. No matter if you are on your own or in a team, with Race and Mountain King, the super-light X-King easily covers many uses, ranging from cross country/race to Alpcross.The X-King simply leaves its competitors behind. Its Black Chili Compound offers a solid grip and is self-cleaning. The shoulder lugs provide absolute stability in curves negotiated at high speeds.With new RS and ProTection carcass versions, puncture resistance is better than ever.