Featuring the same revolutionary frame design est of the FR Series, the FR2 is constructed from Feltâs own UHC Advanced + TeXtreme carbon fiber with a fork made from UHC Ultimate + TeXtreme carbon fiber. This yields a lightweight and highly efficient chassis, and one that offers incredible pedaling stiffness, a supple ride quality, and maximum steering control. The FR2 boasts all of the performance credentials as the top bikes in the FR turing a Shimano Ultegra Di2 8050 drivetrain for precise shifting, the FR2 also features a set of Mavic Ksyrium Elite wheels.