Vittoria Corsa Evo CX Tubular Tire Corsa CX has proved successful in road races all over the world, but in its new EVO version it is destined for even greater success. With a hand made tubular structure for superior performance and comfort it has also got a special latex inner tube that increases its elasticity and puncture resistance. Further features are the new KevlarÆ SiO 2 3D compound with added silica - for reduced rolling resistance and better grip in the wet - and the new composite Corespun K 290 TPI casing that uses a blend of Polycotton (cotton and polyester) and KevlarÆ threads. The very high thread density of 290 TPI (equivalent to1.100 threads per decimetre!) ensures maximum comfort even at high inflation pressures, while the added KevlarÆ means even better cut resistance. The PRB puncture resistant belting placed under the tread makes the Corsa EVO CX exceptionally reliable.