The Z2 Disc is the all the benefits of a endurance bike with the amazing braking qualities of a disc brake. The Z2 Disc frame is constructed from Felt Endurance Road Disc UHC Performance carbon fiber using MMC Inside Out construction. Equipped with Shimano 11-speed Ultegra Di 2 road disc with Di 2 hydraulic brakes, the Z2 Disc is the ultimate endurance bike.