The S5 is a sport-wide benchmark for speed and aerodynamic efficiency—with the race results to back it up. From Wout van Aert winning the Green Jersey by the biggest margin of victory in modern history, to Simon Yates riding himself into the maglia rosa, S5’s iconic V-stem and bayonet fork are a fixture at the front of the professional peloton. The new S5 builds on that legacy of speed by getting even faster.
The new bike is over 6 Watts faster than its predecessor, 124 grams lighter, and retains the handling, poise, and stability that riders everywhere love. The biggest changes are at the front of the bike, where the most significant aerodynamic performance comes from. The fork legs and head tube got quite a bit deeper, and the all-new, one-piece handlebar/stem builds on the original V-stem concept—and gets even faster.
Cervélo and Reserve co-developed the new Reserve 57|64 Turbulent Aero wheels specifically for use in the S5 frame, completing the aerodynamic system.
Aero Aero Aero
The new S5 is 6.3 Watts faster than its predecessor. These gains are realized primarily at the front end of the bike, but the integration of the asymmetric profiles of the seat tube and rear wheel are a significant source as well. Cervélo has long been the aerodynamic leader in the peloton, and we’re confident that the new S5 is at least 5 Watts faster than the bikes of our competitors.
One-Piece Handlebar/Stem
HB19 uses our “Plus-Four” concept, meaning the dimension at the hoods is 4cm narrower than in the drops (e.g. 38cm/42cm). This approach helps riders maintain a more aero body position while their hands are on the hoods, and provides stability in the drops for descending and sprinting. All bar sizes are UCI-legal, even in light of the most recent regulations change.
Not just faster. Lighter, too.
Despite an increase in surface area, the new S5 is 124 grams lighter than its predecessor. While the increase in fork and head tube depth added weight, we optimized the layup and hardware to make the system lighter.
Reserve 57|64 Designed for S5:
The new Reserve 57|64 wheelset was co-developed by Reserve and Cervélo, and designed for use in the new S5. The rear wheel’s asymmetry matches the seat tube, ensuring air flows smoothly over both. The new wheelset is 3 Watts faster than the 52|63 wheels, and weighs the same.
| Sizes | 48cm, 51cm, 54cm, 56cm, 58cm, 61cm |
| Fork | Cervélo All-Carbon, Bayonet S5 Fork |
| Headset | FSA IS2 1-1/8, 36° x 45° / 1-3/8, 36° x 45° |
| Stem | |
| Handlebar | |
| Seatpost | Cervélo SP34 Carbon |
| Saddle | Selle Italia NOVUS BOOST EVO SuperFlow Ti |
| Shifters | |
| Brake Calipers | |
| Brake Rotor | |
| Front Derailleur | Shimano Ultegra, R8150 |
| Rear Derailleur | Shimano Ultegra, R8150 |
| Cassette | Shimano Ultegra, R8100, 11-34T, 12-Speed |
| Chain | Shimano M8100 |
| Crankset | Shimano Ultegra, R8100, 52/36T |
| Bottom Bracket | FSA, BBright thread together for 24mm spindle |
| Wheels | |
| Thru Axles | |
| Tires | Vittoria Corsa Pro TLR G2.0 700x29c |
| Max Tire Width (Actual) | 34mm |
| Accessories | - Cervélo Front Computer/Accessory Mount 887 - Cervélo Rear Accessory Mount |
| 1-piece Handlebar/Stem | Cervélo HB19 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 Sizing | Size 48 - 0mm Size 51 - 0mm Size 54 - 0mm Size 56 - 0mm Size 58 - 15mm Size 61 - 15mm |
| 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 57TA, DT Swiss 240, 12x100mm, 24H, centerlock, tubeless compatible |
| Rear Wheel | Reserve 64TA, DT Swiss 240, 12x142mm, HG freehub 24H, centerlock, tubeless compatible |
| Shifter/Brake Levers | Shimano Ultegra, R8170 |
| Crank Sizing | Size 48 - 165mm Size 51 - 165mm Size 54 - 170mm Size 56 - 170mm Size 58 - 172.5mm Size 61 - 172.5mm |
| Brake Rotors | Shimano CL800 Centerlock |
| Power Meter | 4iiii Precision Pro, GEN3+ Dual Sided |
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