Challenge - Dune Pro OT 700X33C Black / Brown

Many years world champion cyclo-cross with Challenge. Whether you're a pro or just a hard-core rider, Grifo is the bike tire you need. The Grifo bicycle tires offer incredible grip without compromising rolling resistance.

Challenge's Gravel Grinder tire features a fast-rolling diamond profile for all-round gravel and adventure use with outer studs that only lock when the ground gets soft, muddy or slides around corners.

The Deva distinguishes itself due to its optimal clamping. The cylindrical shape of the Deva considerably reduces the chance of the bottle working its way out of the cage and falling, preventing dangerous situations. In combination with the Shiva and Shanti bottles by Tacx, the Deva has optimal clamping, even on poor road surfaces. Yet the cage has also been constructed in such a way that placing the bottle into it is a simple and smooth action.

Mounting a crank becomes easy with this handy crank bolt mounting key. Both the serrated Shimano crank bolt and the hexagonal Sram and Raceface crank bolts are easily loosened and tightened with this handy tool. The wide wings offer grip and hold. This allows you to put more power on it so that even rusted bolts come off. If even that does not work, there is also the possibility of creating a larger lever through the socket recess.