Cervélo S5 Ultegra DI2 Carnelian 12-Speed Carbon Aero Bike 2026
The 2026 Cervélo S5 Ultegra DI2 Carnelian continues to dominate when it comes to aerodynamic performance. A favorite with the biggest names in the peloton, like Wout van Aert and Simon Yates, this high-end race bike returns with even sharper lines, an optimized one-piece cockpit, and Reserve 57|64 wheels designed specifically for this frame. It’s 6.3 watts faster, 124 grams lighter, and just as stable as ever. Equipped with Shimano Ultegra Di2 12-speed electronic groupset and a 4iiii power meter, this S5 has everything to appeal to demanding cyclists looking for a high-performance, modern bike.
Fork
Cervélo all-carbon, Bayonet S5 model
Headset
FSA IS2: top 1-1/8 (36° x 45°) / bottom 1-3/8 (36° x 45°)
Seat post
Cervélo SP34 carbon
Saddle
Selle Italia Novus Boost EVO SuperFlow saddle with titanium rails
Front derailleur
Shimano Ultegra Di2 R8150
Rear derailleur
Shimano Ultegra Di2 R8150
Cassette
Shimano Ultegra R8100, 11-34 teeth, 12 speed
Chain
Shimano M8100
Crankset
Shimano Ultegra R8100, 52/36 teeth, with 4iiii Precision Pro GEN3+ power meter (dual measurement)
Bottom bracket
FSA threaded BBright for 24mm axle
Tires
Vittoria Corsa Pro TLR G2.0 700 x 29c
Maximum tire width
34 mm (measured)
Accessories supplied
Front mount for computer or accessory (Cervélo Computer Mount 887)
Cervélo Rear Accessory Mount
One-piece handlebar and stem
Cervélo HB19 Carbon with “Plus-Four” geometry
Hanger width by size
48 cm : 36 cm
51 cm : 38 cm
54 cm : 40 cm
56 cm : 40 cm
58 cm : 40 cm
61 cm : 40 cm
Stem length depending on size
48 cm: 80 mm
51 cm: 90 mm
54 cm: 100 mm
56 cm: 100 mm
58 cm: 110 mm
61 cm: 120 mm
Seatpost offset by size
48 cm: 0 mm
51 cm: 0 mm
54 cm: 0 mm
56 cm: 0 mm
58 cm: 15 mm
61 cm: 15 mm
Front thru axle
Cervélo Aero Thru Axle, M12 x 1.5mm, 122mm Length
Rear thru axle
Cervélo Aero Thru Axle, M12 x 1.0 mm, length 169 mm
Front wheel
Reserve 57TA, DT Swiss 240 hub, 12 x 100 mm, 24 spokes, centerlock mounting, tubeless compatible
Rear wheel
Reserve 64TA, DT Swiss 240 hub, 12 x 142 mm, HG freehub body, 24 spokes, centerlock mount, tubeless compatible
Gear levers / brakes
Shimano Ultegra R8170, with hydraulic disc brake
Crank length depending on size
48 cm: 165 mm
51 cm: 165 mm
54 cm: 170 mm
56 cm: 170 mm
58 cm: 172.5 mm
61 cm: 172.5 mm
Brake discs
Shimano CL800, centerlock mount
| Size | 48, 51, 54, 56, 58, 61 |
|---|
