Uhc advanced carbon fibre framewith a lightweight frameset made from felt39s uhc advanced carbon fiber the fr3 boasts all of the performance credentials as the flagship models in the fr series and with the functionality and dependability of a shimano ultegra drivetrain and shimano rs21 wheels the fr3 is a reliable teammate for outperforming the competition on any racecourse or giving you the ride of your life on any road shimano ultegra drivetrainlight action vivid shifting is just one o