Trek Procaliber 9.5 Carbon Hardtail with Isospeed! - YouTube
Trek Bicycle - Smooth means fast. Integrated with the IsoSpeed decoupler and carbon frame, the Procaliber 9.5 rides smoother than any other hardtail, so your body doesn't get beaten up by trail
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Test Trek Procaliber 9.8 SL 2017, test Trek Iso speed, Fox Factory Step Cast - YouTube