2026 Cervélo R5 Shimano Dura-Ace Di2 Pure Performance. Unrivaled Lightness. The 2026 Cervélo R5 is a masterpiece of carbon engineering, designed for one purpose: to reach the summit first. Weighing in at an incredible 5.97kg (size 56), it stands as one of the lightest production bikes in the world. Equipped with the flagship Shimano Dura-Ace Di2 R9270 groupset, Ceramic Speed bottom bracket, and Reserve 34|37 SL wheels, this bike delivers the stiffness required for WorldTour sprints and the agility needed for legendary Alpine descents. Elite Climbing Features Sub-UCI Lightweight Frame: At only 651g for the frame, the R5 is refined to be 900 grams below the UCI weight limit, offering an elite power-to-weight ratio. Shimano Dura-Ace Di2 Groupset: The gold standard of electronic shifting—lightning-fast, wireless, and perfectly integrated. 4iiii Precision Pro Power Meter: Factory-installed Gen3+ dual-sided power meter for professional-grade data tracking. Reserve 34 | 37 SL Wheelset: Ultralight carbon rims paired with DT Swiss 180 hubs for exceptional responsiveness and ceramic-bearing smoothness. HB18 Carbon Cockpit: A one-piece handlebar and stem system that improves aerodynamics by 2 Watts while shedding 150 grams. Technical Specifications Frameset & Geometry Frame/Fork Cervélo All-Carbon, Tapered R5 Fork (651g Frame / 298g Fork) Headset FSA SL IS2 1-1/4 x 1-1/2 Thru Axles Cervélo Aero Thru Axle (12x100mm Front / 12x142mm Rear) Drivetrain & Brakes Groupset Shimano Dura-Ace Di2 R9250/9270, 24-Speed Electronic Crankset Shimano Dura-Ace R9200, 52/36T with 4iiii Precision Pro Dual Sided Power Meter Bottom Bracket Ceramic Speed, BBright SL for 24mm spindle Cassette Shimano Dura-Ace, 11-34, 12-Speed Brake Rotors Shimano CL900 Centrelock Wheels & Cockpit Wheelset Reserve 34|37 SL, DT Swiss 180 Hubs, Tubeless Compatible Tyres Vittoria Corsa Pro Speed TLR 700x26 (Max Clearance: 34mm) Handlebar/Stem Cervélo HB18 Carbon One-Piece Integrated Saddle Prologo Nago R4 PAS LIGHTWEIGHT NACK Total Weight 5.97 kg (Size 56)