The continental grand prix clincher road tyre is a part of cycling history in the late eighties it signalled the start of the modern racing bike clincher and is known for its outstanding quality and performance this latest version includes a densely woven polyx breaker layer in the casing for anti puncture protection and the black chili compound for improved grip it also features a modern profile design and twi wear indicator adkey featuresrace standard road bike clincher tyreblack ch