The Continental Grand Prix 4000S II Tubular is Continental's latest tubular tyre. It's the updated version of the Continental 4000 SR which has proven itself over the years. The Continental Grand Prix 4000S II Tubular tyre is, together with the Competition, one of the most used competition tubular tyres in the professional peloton. Its seamless carcass ensures that the tubular tyre fits perfectly on the rim, what gives a better shape and a lower rolling resistance. In addition, they have changed the Continental Grand Prix 4000S II tubular tyre compound, just like they've done with the Continental Grand Prix 4000S II folding tyre. The new compound ensures an extended tyre life span. The Black Chili compound and the Vectran breaker layer ensure a good looking tubular tyre with the best features you would expect from Continental.