Ultra-Aero SL - Pro
Lightweight aero carbon frame, forks & bars. Shimano Ultegra Di2 for lightweight electronic shifting.
BeyondFast
Born from extensive R&D, the Ultra-Aero SL is designed for real-world aerodynamic performance. By optimising airflow between bike and rider, it delivers unmatched efficiency in everyday riding conditions. Rigorously tested against the Endurance SL R, a proven race-winning machine, the Ultra-Aero SL is faster, lighter, and more refined—unlocking true performance gains.
This isn’t just a pro-level aero bike—it’s for anyone chasing speed, efficiency, and the thrill of riding faster with less effort.
An AeroObsession
With watt-saving gains being achieved across all areas of the frameset, the Ultra-Aero SL has been optimised to perform in real-world conditions. Specifically around 5-10° of YAW to simulate the crosswinds most commonly experienced by a cyclist. Every aspect of this drag-defying aero bike is engineered to slice through the air with incredible efficiency and precision.
Based on the drag savings demonstrated in the Wind Tunnel and further evidenced in Real World testing, when riding the Ultra-Aero SL, Enthusiast riders* would achieve on average a 54.9 second saving over 40km and 50.2 seconds for Pros* *.
*Enthusiast rider = based on test speed of 22mph. * * Pro rider = based on test speed of 29mph. Time savings calculated from Drag savings in real world and wind tunnel comparison testing. See p.19/20 in R&D Paper for results.
Benchmarked against the optimised and race-proven Endurance SL R, tested with bike and rider, from CFD to wind tunnel and the real world. Resulting in a bike with significant performance gains, delivering an average 69.2 seconds advantage over 40kms across a full YAW sweep, up to 20°.
Visit our dedicated page to find out more about our research and development process
SpeedThrough Innovation
Every element of the frame, fork and seat post has been dissected, analysed, profiled, and tested in the pursuit of ultimate aerodynamic performance. To minimise drag, the forks form a holistic package with the headtube and handlebars to maximise airflow across a complete range of YAW, with fork blades of 68mmx15mm proving to be the optimal sweet spot for performance, providing significant aero gains at 5° and beyond. The profile of the fork and the position of the blade in relation to the rider and other downstream elements of the bike optimises airflow across the entirety of the bike. This interaction proved so harmoniously efficient that from 10° of YAW, the tube profile, in fact, starts to generate thrust, helping to propel you rather than push you back.
Aero EnhancedDowntube
Aerodynamically optimised tube shapes ensure that the transition between the headtube, fork, and lower downtube performs from both an aerodynamic and handling perspective in the full range of YAW conditions typically encountered by a cyclist. The lower section of the downtube has been optimised to be faster with a bottle than without, demonstrating an advantage in generating thrust from 10° including the bottle. A crucial transition with the bottom bracket provides the torsional stiffness required for optimal power transfer which results in tangible performance gains.
DeepAirfoil Seat Tube
The optimised and truncated seat tube profile conforms to the curvature of the rear wheel to shield the leading edge from the wind and significantly enhance aerodynamic performance by reducing turbulence.
StealthBrake mounts
The hallmark of any aero bike is its clean aesthetics and streamlined form. Integration of the brake mounts moves the brakes inboard of the fork profile to enhance airflow over the front end and minimise the effects of drag.
IntegratedBar & Stem
The Ribble RI-2 carbon integrated handlebar is a proprietary system that conceals every cable while providing optimal fit, adjustability, and seamless integration. This one-piece cockpit exemplifies the perfect marriage of form and function, combining a clean, cable-free aesthetic with advanced aerodynamics to reduce drag by up to 40% compared to a conventional handlebar setup. With a super-stiff carbon monocoque construction and refined ergonomics, the RI-2 system is designed for speed-conscious road riders who prioritise performance and all-day comfort.
ShapedFor Speed
The rear seat stay profiles are aerodynamically perfected to provide the ideal drag-defying ratio of width to depth which significantly enhances airflow over the rear end. Positioning the stays in perfect alignment with the forks maintains optimal flow attachment and reduces drag downstream of the rider for superior aerodynamics and lateral stiffness.
SizeGuide
To help you select the correct size, please find your height below. The graphic below illustrates our recommendations, ensuring that the size you order will fit you perfectly.
Extra Small
5'3 - 5'5
160 - 165cm
Small
5'5 - 5'7
165 - 170cm
Medium
5'7 - 5'10
170 - 178cm
Large
5'10 - 6'1
178 - 185cm
Extra Large
6'1 - 6'3
185 - 191cm
Available OnCycle to Work
The Ultra-Aero SL is available to order on cycle to work schemes.
We accept all major cycle to work scheme vouchers
AdditionalExtras
UltraResearch & Development
Built for speed, the Ultra-Aero SL R/SL is a superfast aero platform that offers everyone from the everyday road rider to pro racers a significant performance advantage in their relentless pursuit of speed. Its advanced aerodynamic frame and forks, optimised for outright speed gives you the power to dominate everywhere, from bunch sprints to alpine climbs or lone breakaways.
