Continental Grand Prix 4000S Ii Tubular Tire

Continental Grand Prix 4000S II Tubular Tire. The Continental Grand Prix 400S II is one of the most popular racing clinchers in the world. One of the key praises of the clincher was that it came close to performing like a tubular tire. Well...now the Gran Prix 4000S is finally available as a tubular. You get the same low rolling resistance, low weight, and the renowned Continental BlackChili rubber compound. A vectran breaker underneath helps prevent punctures, and the seamless casing design makes the gluing process and properly seating the tire much easier.