2026 Cervelo R5 Shimano Ultegra Di2 Carbon Lightweight Road Bike
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Product Description
2026 Cervélo R5 Shimano Ultegra Di2
The Summit Seeker. Pure Climbing DNA.
The 2026 Cervélo R5 Shimano Ultegra Di2 Carbon is a pure lightweight road machine engineered to conquer grueling mountain ascents with rapid acceleration and clinical efficiency. Built around a stripped-back carbon frameset that pairs ultra-low mass with massive bottom-bracket stiffness, this climbing specialist transfers every ounce of pedal effort into uphill momentum. Powered by Shimano's razor-sharp Ultegra Di2 12-speed electronic drivetrain featuring an integrated dual-sided 4iiii power meter, agile Reserve 34|37 carbon wheels on DT Swiss 240 hubs, and the sleek HB18 integrated carbon cockpit, it gives ambitious racers a hyper-responsive, lightweight, and aerodynamically optimized platform engineered to attack steep inclines and carve down technical descents with confidence.
Elite Climbing & Performance Features
Ultralight Frame Construction: With a combined frame and fork weight under 1kg (949g total), this chassis delivers an exceptional power-to-weight ratio tailored for Alpine-style climbs.
Shimano Ultegra Di2 Drivetrain: Seamless electronic 12-speed shifting delivers instant, highly dependable gear changes even under intense pedaling forces during out-of-the-saddle efforts.
4iiii Precision Pro Dual-Sided Power Meter: Monitor training output and pace your race efforts accurately using the factory-installed dual-sided power measurement system.
Reserve 34 | 37 Aero Wheelset: Built around ultra-reliable DT Swiss 240 hubs, these carbon rims deliver optimal handling stability on high-speed descents while shedding unnecessary rotational weight.
HB18 Integrated Carbon Cockpit: A sleek single-piece bar-stem combination that sheds 150 grams over standard setups while providing a 2-Watt drag reduction at the front end.
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 Ultegra Di2 R8150/8170, 24-Speed Electronic |
| Crankset | Shimano Ultegra R8100, 52/36T with 4iiii Precision Pro Dual Sided Power Meter |
| Bottom Bracket | FSA, BBright thread together, 24mm spindle |
| Cassette | Shimano Ultegra 11-34, 12-Speed |
| Brake Rotors | Shimano CL800 Centrelock |
| Wheels & Cockpit | |
| Wheelset | Reserve 34|37, DT Swiss 240 Hubs, Tubeless Ready |
| Tyres | Vittoria Corsa Pro Speed TLR 700x26 (Max 34mm) |
| Handlebar/Stem | Cervélo HB18 Carbon Integrated One-Piece |
| Saddle | Prologo Nago R4 PAS LIGHTWEIGHT TiRoX |
| Seatpost | Cervélo SP33 Carbon |
A Heritage of Speed
The Cervélo R5 has been the benchmark for climbing excellence for over two decades. Whether it's proving its worth at the Tour de France Femmes or helping you conquer your local gradients, the R5 is built for the obsessed. By refining the fit geometry to match the aerodynamic S5, Cervélo has created a bike that feels as fast on the descents and flats as it does on the steepest peaks. With the HB18 carbon cockpit and refined tire clearance up to 34mm, this is the most capable and comfortable R5 ever built.
