The Felt AR3 2012 Road Bike is as aerodynamic and efficient as a road bike gets. The radically shaped down tube, head tube, chainstays, seatstays and fork-all meticulously constructed from UHC Advanced carbon fibre -slice through the wind like nothing else available. Felt's Modular Monocoque Construction lends the AR3 a lightweight, snappy feel for climbing and accelerating. Shimano Ultegra Di2 electronic shifting and Mavic wheels ensure reliable performance on every ride.