The F-Si Carbon 4 is a beast on the trail. Designed to let you out-kick them on the climbs and out-rip them on the descents, this ultralight rocket is your ticket to the top of the podium. Equipped with the Lefty fork, you'll out-corner, out-steer, and out-handle the competition again and again. Get insane traction with super short chainstays without being limited to 1x set-ups or sacrificing mud clearance. Cannondale also equips the F-Si with fit-focused wheel diameters, to achieve the best possible fit for all riders. With Shimano XT/SLX shifting, and Shimano Deore hydraulic braking, you'll race uphill and carve back down with expert precision. A Cannondale bar, durable WTB rims, and tacky Schwalbe Racing Ralph tires create a slick, race-ready hardtail package that's undeniable and distinctive both on the trail and off.