The game has changed: The all-new Procaliber SL

See the all-new Trek Procaliber SL: In mountain biking’s heyday, Procaliber was the envy of all other race bikes. Now it’s back to rule the XC circuit once again, redefining the term “hardtail“ and setting the bar for speed and smarts. Procaliber’s IsoSpeed decoupler delivers uncompromising cross country performance, efficiency, and an incredible ride feel. It’s the fastest, smoothest, smartest hardtail on the trail.