R5 Dura-Ace Di2

The fifth-generation Cervelo R5 is an uncompromising climbing specialist built for the steepest gradients and the most demanding riders. While the broader industry has shifted toward aerodynamic all-rounders, Cervelo retains the R5 as a dedicated lightweight platform, stripping mass wherever possible to create a bike that thrives in the high mountains. Visually, the frame maintains a traditional silhouette with slender tube profiles and pencil-thin seatstays, but it introduces a fully integrated one-piece cockpit that cleans up the front end. Designed to sit well below the UCI weight limit in its top configurations, the R5 is aimed squarely at pure climbers, Grand Tour contenders, and enthusiasts who prioritize immediate acceleration over flat-road aerodynamics. It is a machine built for the visceral thrill of defying gravity, offering a highly focused ride experience for those who measure their rides in elevation gained.

$14,150Shimano Dura-Ace Di2Gen Gen 5

Build

Size

Inventory

$14,150

$14,150

$14,150

$14,150

Stack	544.6mm
Reach	383.3mm
Top tube	545mm
Headtube length	132mm
Standover height	757.4mm

Fit and geometry

For this generation, Cervelo aligned the R5’s fit geometry directly with its S5 aero bike. This change was driven by professional riders who wanted to swap between the two platforms without adjusting their position. As a result, the R5 features a slightly lower stack and longer reach than its predecessor, placing the rider in a stretched, aggressive posture optimized for racing.

Despite the revised rider positioning, the handling geometry remains largely unchanged, preserving the quick, agile steering the platform is known for. The only notable handling adjustment is a small increase in bottom bracket drop, implemented to maintain the bike's center of gravity when running larger tires.

The front end is defined by the new HB18 one-piece carbon bar and stem. This integrated cockpit features a subtle flare from the hoods to the drops, offering a narrower stance for aerodynamic efficiency on the hoods and a wider base for sprinting and descending. While the one-piece design limits fine-tuning compared to a traditional two-piece setup, it contributes significantly to the bike's overall weight reduction and provides a rigid platform for out-of-the-saddle climbing.

Full specs

Frameset

Fork

Cervélo All-Carbon, Tapered R5 Fork

Groupset

Shift levers

Shimano Dura-Ace, R9270

Front derailleur

Shimano Dura-Ace, R9250

Rear derailleur

Shimano Dura-Ace, R9250

Cassette

Shimano Dura-Ace, R9200, 11-34T, 12-Speed

Chain

Shimano M9100

Crankset

Shimano Dura-Ace, R9200, 52/36T

Bottom bracket

Ceramic Speed SL, BBright for 24mm spindle

Front rotor

Shimano CL900 Centerlock

Rear rotor

Shimano CL900 Centerlock

Wheelset

Front wheel

Reserve 34TA SL, DT Swiss 180, 12x100mm, 24H, centerlock, tubeless compatible

Rear wheel

Reserve 37TA SL, DT Swiss 180, 12x142mm, HG freehub 24H, centerlock, tubeless compatible

Front tire

Vittoria Corsa Pro Speed TLR G2.0 700x26c

Rear tire

Vittoria Corsa Pro Speed TLR G2.0 700x26c

Cockpit

Handlebars

Cervélo HB18 Carbon

Saddle

Prologo Nago R4 PAS Nack Lightweight

Seatpost

Cervélo SP33 Carbon

Builds

The R5 lineup spans five premium builds, all utilizing the same top-tier carbon frame and fork. The range is split between SRAM and Shimano electronic groupsets, starting with Force AXS and Ultegra Di2, and topping out with Red AXS and Dura-Ace Di2. Cervelo also offers a specialized Red XPLR AXS 1 build, which utilizes a 1x13 drivetrain with a wide-range cassette for riders who prefer the simplicity of a single chainring on steep terrain.

Wheel specification is a major differentiator across the price points. All models roll on Reserve 34|37 carbon wheelsets, but the hub quality scales with the build. The Force and Ultegra models feature DT Swiss 240 hubs, while the Red and Dura-Ace tiers upgrade to the Reserve SL rims laced to premium DT Swiss 180 hubs with ceramic bearings.

Value in the R5 range is heavily tied to its out-of-the-box readiness for serious training. The SRAM builds explicitly include integrated power meters, and all models feature the HB18 one-piece carbon cockpit and a lightweight Prologo saddle. The primary upgrade riders may need to budget for is a set of wider tires, as the stock 26mm Vittoria rubber prioritizes scale weight over everyday versatility.

Ultegra Di2

$10,100

Shimano Ultegra Di2

Force AXS

$10,250

SRAM Force AXS

Dura-Ace Di2

$14,150

Shimano Dura-Ace Di2Selected

Red AXS

$14,400

SRAM Red AXS

Red XPLR AXS 1

$14,400

SRAM Red XPLR AXS 1

Reviews

Reviewers universally praise the R5 for its exceptional climbing prowess and immediate power transfer. Stripped of excess weight, the bike delivers a highly reactive ride that excels on steep pitches. Testers note that the frame responds instantly to pedaling input, providing "snappy, almost effortless acceleration" (Granfondo) out of slow corners and switchbacks. This lack of mass translates into a distinct sensation on the road, giving the bike a "ghostly quality" (Cyclist Magazine) that makes riders feel unusually fresh on sustained ascents.

While it climbs beautifully, reviewers are quick to point out the bike's specialized nature. On flat or rolling terrain, it lacks the sheer straight-line momentum of a dedicated aero bike, meaning it requires more effort to hold high speeds in the wind. However, testers argue that the tradeoff is entirely worth it when the road tilts upward, where the bike "feels extra quick going up any hill" (Bicycling).

The most common critique centers on the stock tire choice. Cervelo ships the bike with 26mm tires to achieve the lowest possible weight on paper, a decision multiple reviewers describe as "needlessly narrow" (Cyclist Magazine). Testers consistently recommend swapping to wider rubber to improve descending grip, cornering stability, and overall ride quality, noting that the frame easily accommodates modern tire volumes.