The differentiator: The IsoSpeed decoupler with an enclosed bearing reportedly doubles vertical compliance. photo: Trek

The differentiator: The IsoSpeed decoupler with an enclosed bearing reportedly doubles vertical compliance. photo: Trek

Katie Compton's new Trek Boone carbon cyclocross bike features an IsoSpeed fork with plenty of mud clearance. photo: Trek

Katie Compton’s new Trek Boone carbon cyclocross bike features an IsoSpeed fork with plenty of mud clearance. photo: Trek