![GP4000 S2 - tubular](http://velovortex.com/cdn/shop/products/Continental-tire-gp4000_{width}x.jpg?v=1606417181)
The Challenger. The Grand Prix 4000 tubular may be missing the aura of the old champion, but the challenger is enticing professional cyclists with its new technology. A seamless casing design improves the rim seating, uniformity and rolling resistance. The name, the dynamic tread design of the Grand Prix 4000 and of course a Vectran® puncture protection breaker state the high ambitions of this tire. Naturally, both competitors enter the race with the innovative BlackChili tread mixture.