Felt39s uhc advanced textremer carbon fibrebuilt around a lightweight and stiff frame comprised of felt39s uhc advanced textremer carbon fiber and a fork made from uhc ultimate textremer carbon fiber the fr2 boasts all of the performance credentials as the top bikes in the fr line featuring a shimano ultegra di2 drivetrain for precise shifting and reliability the fr2 also includes a set of mavic ksyrium elite wheels and a pioneer power meter shimano ultegra di2 drivetrainwi