Shimano Ultegra R8100 has been completely redesigned with all-new ergonomics, even greater brake modulation and the sheer precision of wireless electronic shifting. It delivers the world’s fastest and most reliable wireless shifting and a wide gear range which means no matter how steep a climb is; it’s never outside your comfort zone. Di2 gives you instant, accurate, lightning-fast shifts every time at the push of a button. Even in the most extreme of conditions, shifting is precise and controlled. You can even change gear under heavy load while climbing or accelerating. With Di2, you are in complete control.

Wind tunnel perfected to reduce inertia and maximise your watt output; Cosmic SL 65 offers solo breakaway artists, sturdy sprinters, and triathletes a wind-carving, progressive aerodynamic wheelset for fast, flat road races or windy triathlons. The 65mm deep and 19mm wide NACA rim profile helps to reduce drag, resulting in faster acceleration and enhanced crosswind stability. Paired with Pirelli P Zero road tyres, which balance performance with durability, for both reliability and comfort. The carcass features excellent puncture resistance, whilst coming in at an impressively low weight.

*Please Note: The bike is supplied with the latest version of the Cosmic SL65 wheels, which feature an updated aesthetic. When configuring your build, click the wheelset option to view up-to-date imagery.

Engineered exclusively for our fastest-ever aero bike, the ULTRA-AERO bars redefine aerodynamic integration with a patent-pending, next-generation design. At the heart of this innovation is a groundbreaking wake-generating concept that disrupts airflow, creating a controlled wake for the rider’s legs to sit within while strategically manipulating vortexes to enhance overall aerodynamics. The aggressive, drag-defying anatomic wing top section reinforces the bar’s aero dominance, cutting through the air with precision. But speed isn’t the only priority—comfort is integral to the design. The flat-top section offers a secure and relaxed hand position for climbing, while the ergonomically optimized drops naturally conform to the rider’s palm. With a textured finish that eliminates the need for bar tape, every detail is fine-tuned for performance and control.

The ULTRA-AERO seat post features a truncated aerofoil profile that's aerodynamically optimised to reduce drag in the high-speed airflow disturbed by the rider's leg. A composite shaft absorbs road shocks for a vibration-smoothing ride quality further enhanced by a Selle Italia SLR Boost saddle. Bringing performance, comfort, and support to any endurance ride or race event, the SLR's neutral shape allows complete freedom of movement without compromising pedalling efficiency or power output.