Braking is handled by Shimano’s Ultegra hydraulic disc system with CL800 rotors. These rotors are engineered with improved heat dissipation for fade-free performance, and the braking feel is light at the lever with smooth, progressive modulation. On technical descents or in dense pack riding, this translates to confident stopping power with intuitive control. It’s a braking system that feels refined, predictable, and consistent across conditions.

The rolling stock mirrors the Force build, with Reserve 34|37 carbon wheels offering asymmetric depths of 34 mm at the front and 37 mm at the rear. This strikes a balance between low weight and aerodynamic efficiency, perfectly suited to the R5’s dual role as both a climber and an all-around race bike. The wheels are built on DT Swiss 240 EXP Ratchet hubs, known for their light weight and reliability, and they’re wrapped in Vittoria Corsa Pro TLR 26 mm tires for low rolling resistance and exceptional grip. The combination is race-ready straight out of the box.

Cervélo’s finishing kit keeps the build sleek and efficient. The HB18 one piece bar stem combo integrate cables cleanly while delivering stiffness and precise control. The Prologo Nago R4 PAS saddle offers ergonomic comfort for long days in the mountains, and the D-shaped seatpost completes the aerodynamic package. Fit and ergonomics match the Force bike, but the Ultegra build carries its own personality, shaped by Shimano’s drivetrain and braking character.

The R5 Ultegra Di2 is more than a spec choice—it’s a different expression of Cervélo’s flagship climbing machine. It feels direct and familiar to riders who prize Shimano’s shifting cadence and braking finesse, with the added benefit of dual-sided power measurement built in. Combined with the ultralight, race-proven R5 frame, it becomes a bike that blends modern engineering with a classic racing feel, precise and measured but every bit as aggressive when the road points up. For riders chasing Grand Tour pedigree with Shimano’s trusted control at their fingertips, this build delivers the ultimate expression of the R5 platform.