Challenge H-Tlr Almanzo Pro Valves An open tubular is constructed

An open tubular is constructed using the same casing and tread materials and process as a tubular

Extremely flexible tire for low rolling resistance and good grip in corners

aerodynamic shape of this jersey

we’ve published a detailed overview of the best-performing tyres for the Racemax² Italia

even during intense efforts and variable weather

Challenge H-Tlr Almanzo Pro Valves An open tubular is constructedThis Challenge Gravel Almanzo Pro Open Tubular is really built for speed. The shallow profile gives you speed on the straight while the knobs on the side provide grip in the corners. The high TPI of the tire makes it very supple, which provides both grip in the corners and low rolling resistance. The tire is perfect for dry and hard terrain such as gravel due to its profile. Thanks to the Puncture Protection Strips you are well protected against