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Ultra SL

When being fast, just isn’t fast enough! Faster in the wind tunnel, faster on the road, the Ultra SL is designed to dominate, defeat the wind and make your fastest rides faster than ever before.

Choose from millions of colour combinations, with CustomColour, available on this bike.
find out more

Choose from millions of colour combinations, with CustomColour, available on this bike. Find the configurator under the 'Customise' button after you have selected your size.

    • Ultra SL Carbon Monocoque Frame
    • Shimano 105 2x12-Speed Mechanical
    • LEVEL 5 Carbon Integrated Handlebars
    • Mavic Ksyrium 30 Disc Alloy Wheels
    • Ultra SL Carbon Monocoque Frame
    • Shimano 105 Di2 2x12-Speed
    • LEVEL 5 Carbon Integrated Handlebars
    • Mavic Cosmic SL 45 Carbon Wheels
    • Ultra SL Carbon Monocoque Frame
    • Shimano Ultegra Di2 R8100 2x12-Speed
    • LEVEL 5 Carbon Integrated Handlebars
    • Mavic Cosmic SL 45 Carbon Wheels
    • Ultra SL Carbon Monocoque Frame
    • Shimano Dura-Ace Di2 2x12-Speed
    • LEVEL 5 Carbon Integrated Handlebars
    • Mavic Cosmic SL 65 Carbon Wheels

The Ultra SL is the result of our extensive R&D, paying particular attention to how the airflow interacts between the bike and rider. Taking an innovative approach to design and integration we've created a bike that hits the pinnacle of aerodynamic performance at real-world speeds and in everyday riding conditions. Through vigorous testing of the holistic package of bike and rider, we've ensured that a true performance gain is realised with the Ultra SL proving to be consistently faster than the benchmark Endurance SL R. Already aero-optimised and super light in design, the Endurance SL R has competed at World Tour level and been ridden to many victories by the Ribble Weldtite Pro Cycling and DROPS racing teams. The Ultra SL isn't just a bike for pro racers, it’s a superfast aero bike for everyone who is looking for significant performance gains in their pursuit of speed.

Aero Obsession

With watt-saving gains being achieved across all areas of the frameset, the Ultra 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 SL, Enthusiast riders* would achieve on average a 54.9 second saving over 40km, and 50.2 seconds for Pro's**.

*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.

Visit our dedicated page to read more about our research and development process

*STAT: Quoted as average between 5-10 degrees of YAW

through 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 68mm x 15mm proving to be the optimal sweet spot for managing airflow, 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 Enhanced

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.

Airfoil 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.

Brake 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.

Bar & Stem

The LEVEL 5 integrated handlebar system takes cable integration to the next level. It allows every cable to be fully hidden within the frame for a clean, cable-free aesthetic, and a drag reduction in all instances of up to 40% when compared to a standard handlebar and stem setup. With a super-stiff carbon monocoque construction and all-day ergonomics, the LEVEL 5 system suits the speed-conscious road rider with a taste for comfort and an eye on the podium.

For 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.


Custom Colour


We create the bike, you decide the design. Be bold and bright or stealthy as you like. With millions of combinations, you can make a bike unique to you.

Just select customise after choosing your size.

Your Bike. Your Way

Research & Development

Built for speed, the Ultra SL R/SL is a superfast aero bike that offers everyone from the everyday road rider to pro racers a significant performance advantage in their 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.

Read more about the development of the Ultra range
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Level 5 Carbon Fibre
Bottle Cage

Durable and lightweight, the LEVEL 5 bottle cage performs superbly, ensuring that any bottle stays safely secured, even over the roughest of terrains. Available in a Matte or Gloss 3K carbon finish, it creates a stylish look to complement any bike.

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