Cervelo R5 Ultegra Di2 - 2026

5.97kg And Race-Ready The R5 is legendary. From the limits-shattering R5CA to Wout van Aert’s winning day on Mont Ventoux, R5 has been part of Cervelo’s story for over two decades. This all-new R5 is an incredibly light (5.97kg in RED and Dura-Ace builds) road bike that’s also stiff enough to compete at the highest levels of professional cycling—as Pauline Ferrand-Prevot proved when she rode it to victory at this summer’s Tour de France Femmes. It’s easy enough to make a light bike, but to make a light bike that’s stiff enough to accelerate quickly and transfer power from the sport’s biggest motors? That’s another challenge entirely. R5 is the bike for big days in the high mountains of the Tour de France, and the punishingly steep climbs of the Vuelta a Espana. Bikes built for the mountains must not only accelerate rapidly and climb exceptionally, but descend confidently and predictably. While the UCI mandates a minimum weight of 6.8kg, those of us in the ‘mere mortal’ category will benefit from having the lightest road bike on the market. Race-Ready Fit Geometry While the handling geometry on the new R5 is nearly the same (aside from a small change to BB drop to account for 29mm tires), we changed the fit geometry to match that of the S5. Whether you’re switching between the models like Team Visma|Lease A Bike or R5 is your only ride, you’ll be in a stronger position for the fastest group rides. One-Piece Handlebar/Stem The all-new HB18 bar/stem not only dropped nearly 150 grams from the weight of the bike, but it also helps the bike be two Watts more aerodynamic than the previous R5. We applied learnings from the S5 handlebar to develop a comfortable, fast, and stiff handlebar, ideal for big days in the saddle and hard fights to the line. All bar sizes are UCI-legal, even in light of the most recent regulations change. Ultralight Reserve 34 | 37 SL Wheels Designed specifically for R5, the all-new Reserve 34 | 37 SL wheelset helped us drop an additional 60 grams. The new wheels deliver the same strength and stiffness as the old ones, but we refined the layup to save weight without hampering performance. Sizes 48cm, 51cm, 54cm, 56cm, 58cm, 61cm Weight 6.43 kgs Fork Cervélo All-Carbon, Tapered R5 Fork 1-piece Handlebar/Stem Cervélo HB18 Carbon Handlebar Sizing Size 48 - 36cm Size 51 - 38cm Size 54 - 40cm Size 56 - 40cm Size 58 - 40cm Size 61 - 40cm Stem Sizing Size 48 - 80mm Size 51 - 90mm Size 54 - 100mm Size 56 - 100mm Size 58 - 110mm Size 61 - 120mm Seatpost Cervélo SP33 Carbon Seatpost Sizing Size 48 - 0mm Size 51 - 0mm Size 54 - 0mm Size 56 - 0mm Size 58 - 15mm Size 61 - 15mm Saddle Prologo Nago R4 PAS Tirox Lightweight Bottom Bracket FSA, BBright thread together for 24mm spindle Headset FSA IS2 1-1/4, 45° x 45° / 1-1/2, 36° x 45° Front Thru Axle Cervélo Aero Thru Axle Front, M12x1.5mm, 122mm length Rear Thru Axle Cervélo Aero Thru Axle Rear, M12x1.0mm, 169mm length Front Wheel Reserve 34TA, DT Swiss 240, 12x100mm, 24H, centerlock, tubeless compatible Rear Wheel Reserve 37TA, DT Swiss 240, 12x142mm, HG freehub 24H, centerlock, tubeless compatible Tires Vittoria Corsa Pro Speed TLR G2.0 700x26c Shifter/Brake Levers Shimano Ultegra, R8170 Crankset Shimano Ultegra, R8100, 52/36T Power Meter 4iiii Precision Pro, GEN3+ Dual Sided Crank Sizing Size 48 - 165mm Size 51 - 165mm Size 54 - 170mm Size 56 - 170mm Size 58 - 172.5mm Size 61 - 172.5mm Chain Shimano M8100 Cassette Shimano Ultegra, R8100, 11-34T, 12-Speed Front Derailleur Shimano Ultegra, R8150 Rear Derailleur Shimano Ultegra, R8150 Brake Rotors Shimano CL800 Centerlock Accessories - Cervélo Front Computer/Accessory Mount 887 - Cervélo Rear Accessory Mount *Please note: price and parts spec information is subject to change.