One striking aspect of the last S5 was the proprietary triangular V-stem and handlebar system, which, in line with integrated internal cable routing also offered a cleaner aero front of the bike. The design was adjustable and modular, but complicated, due to integration of the stem and headset system with the proprietary S5 carbon fork. The engineers have cracked that problem, and the iconic V-stem has been further refined for simpler use and adjustment and a new fork been designed to simplify the entire front end of the bike. Now you don't require a top-level mechanic to make adjustments. The S5's V-stem not only inspires confident handling at high speeds, it's now also remarkably simple to dial in your perfect set-up. All the necessary spacers come with the bike, and there’s now only one bolt length, reducing complexity and making the system 53g lighter in the process. The handlebar itself has also been made sleeker, with better hand-to-lever transitioning and an easy 0-5° angle adjustment with infinite positioning within that range. You can truly find that commanding, aggressive racing posture you've always desired, and fully trust the strength and stiffness of the carbon modular assembly in the roughest sprint, attacking on a climb, and railing the descent.

Taking it further, the complete S5 bikes feature the ground-breaking wheel design concept that been co-developed with Reserve to increase stability and reduce drag in turbulent aero conditions. The partners developed a completely innovative way of engineering and testing wheels to perform optimally in turbulent aerodynamic conditions. Wind tunnels usually measure performance in ideal "laminar" flow situations- but such conditions are unrealistic in the real world. The experts within Cervelo helped Reserve develop rim profiles that stall less dramatically at greater yaw angles. In riding terms the wheel becomes more stable (not less), as if it is more planted- or connected to the road surface, and thus more confidence inspiring. The Reserve 52|63 Wheelset is 50g faster in laminar (traditional) flow, and 54g faster in turbulent flow than the outgoing Reserve 50|65 combo. Properly engineered wider wheels and tires can be truly faster aerodynamically, and more forgiving to ride. The S5 comes spec'ed with 28mm tires but has clearance for up to a 34mm (measured) tire. The frameset is co-optimized to complement the wider Reserve 52|63 turbulent aero wheels. In addition to the handling benefits, this saves over 5 watts compared to the previous Reserve wheelset.

The R8170 Di2 shifting system is wireless at the cockpit, with the derailleurs each directly wired to the internal seat post battery. Shifting with the 2x12 drivetrain is incredibly quick, precise, and reliable. Only Dura-Ace does it better. The Shimano system is an optimal partner for the S5, so you can maximize all that that this impeccably engineered complete package can deliver.