2 Pack - The Continental Grand Prix 4000s II Clincher tire is, quite simply, one of the best racing tires on the market. Featuring Continental's Black Chili rubber compound, the Grand Prix 4000s II is fast and grips the road like glue. To keep you rolling strong, the Grand Prix 4000s II also features Continental's Vectran Breaker, a light thread that has a tensile strength greater than that of steel, which repels anything that the road might throw at it. With a tread pattern designed for traction no matter what, the Grand Prix 4000s II will keep going no matter the weather. This clincher tire comes in size 700x23c. Includes 1 Continental Grand Prix 4000s II 700x23c Clincher tire.