To go faster, you need to cheat the wind or reduce weight. Quintana Roo does both with the PRsix Ultegra. Fully embracing the ultimate in speed, this carbon rig blends extensive wind tunnel testing with real-world riding applications to give you a wind-cheating TT machine that's also one of the lightest frames in its class. Boat-tail tube shapes optimize airflow over the entire bike, and QR's Shift+ technology shepherds the wind to the less-turbulent non-drive side to further reduce drag. In addition to poring over every aerodynamic detail and keeping weight as low as possible, Quintana Roo set out to keep the bike extremely user-friendly. Their proprietary stem delivers a 600mm range of adjustability, and the Profile Design Aeria bar with T4+ extensions provides even more position optimization. Shimano's Ultegra drivetrain with an FSA crankset ensures smooth shifting, while Shimano RS11 wheels accelerate quickly. Plus, travel is simple: two hex wrenches is all you need to go from bike case to T1-ready. Grab a new PR!