The new revolution in road cycling tyres the vittoria corsa g isotech foldable tyre is a clincher tyre that is boasts the title of the fastest ever road tyrethe clincher version of the evolved worlds best performance tire pushes the limits of versatility the worlds best tire 4 compounds for best speed grip durability and puncture protection kevlar reinforced corespun k for increased sidewall protectionfeatures clincher tyre ultra fast and grippy g isotech compound hi