Tuning through increased propulsion. The Speed King impresses with its propulsion-oriented profile geometry, offering the lowest rolling resistance in the MTB product range. This racing and tuning tire is primarily used on racing machines and carbon hardtails. Wherever lightweight construction is a priority, this product is the right choice. Competition tires with reduced durability. Tires with BlackChili compound achieve an unprecedented level of performance. Compared to activated silica tires, BlackChili tires have a 26% lower rolling resistance, a 30% higher grip value, and a 5% higher durability. The RaceSport carcasses consistently combine lightweight construction with noticeably better puncture protection at the highest level. Together with renowned professional mountain bikers, the perfect foundation for competition tires has been created. Handcrafted in Germany, they offer 30% better puncture protection than Supersonic tires. The construction makes the difference - particularly fine and high-quality nylon fabric with elaborate protective rubber coating and universal base. Together with the legendary Black Chili compound, this is the ultimate combination for XC race and marathon.