Trek Trek ProCaliber IsoSpeed Parts Kit Black

Trek Procaliber IsoSpeed MTB Bike Mount Kit This IsoSpeed system replacement kit allows you to take advantage of this technology on a Trek Procaliber MTB . By changing the behavior of the bike frame, it's a whole new cycling experience that is offered to mountain bikers. More rigid for races or more flexible on climbs, the IsoSpeed allows you to adjust the nervousness of the machine to your liking. It takes place at the base of the horizontal tube at the level of the seat tube.