![SPECIALIZED](https://www.zerogchamonix.com/img/m/1040812.jpg)
![](https://www.zerogchamonix.com/43680-medium_default/spec-pneu-29-fast-trak-sport.jpg)
The ultra-fast cross-country tire.
The Fast Trak Sport uses a tread profile perfectly suited to cross-country practice. Ultra-fast, it also benefits from good grip on dry and wet terrain. Our Block-In-Block design uses a taller inner crampon for deeper connection with the ground, while the wider, enveloping outer crampon provides support and stability to the inner crampon for grip and maneuverability. without sacrificing speed.