Utilizing UHC Advanced + TeXtreme carbon fiber, Felt engineers created the F4x as a do-it-all race machine for tackling any environment, handling any conditions and besting any competition. With internally routed cabling and a SRAM Rival CX1 drivetrain, the F4x provides intuitive shifting so you can focus purely on giving your maximum effort. The F4x’s wide BB386EVO bottom bracket serves up increased stiffness over its rivals, while hydraulic disc brakes ensure that you’re always in control. TECH SPECS Frame: Felt Cyclocross UHC Advanced + TeXtreme carbon fiber, MMC with InsideOut construction, BB386 bottom bracket shell, 12 x 142mm Syntace style thru axle, shoulder friendly top tube, flat mount disc brake standard, replaceable rear derailleur hanger, internal mechanical or electronic cable routing Fork: Felt Cyclocross UHC Advanced + TeXtreme carbon fiber monocoque construction, ControlTaper 1.125" - 1.5" aluminum steerer tube, carbon