2025/2026 Cervelo S5 Ultegra Di2

Color: Carnelian

The S5 is a sport-wide benchmark for speed and aerodynamic efficiency—with the race results to back it up. 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 S5 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.

Specifications:

• Fork: Cervélo All-Carbon, Bayonet S5 Fork
• Headset: FSA IS2 1-1/8, 36° x 45° / 1-3/8, 36° x 45°
• Seatpost: Cervélo SP34 Carbon
• Left Shifter/Brake: Shimano Ultegra, R8170
• Right Shifter/Brake: Shimano Ultegra, R8170
• Front Derailleur: Shimano Ultegra, R8150
• Rear Derailleur: Shimano Ultegra, R8150
• Brake Rotors: Shimano CL800 Centerlock
• Front Thru Axles: Cervélo Aero Thru Axle Front, M12x1.5mm, 122mm length
• Rear Thru Axles: Cervélo Aero Thru Axle Rear, M12x1.0mm, 169mm length
• Bottom Bracket: FSA, BBright thread together for 24mm spindle
• Crankset: Shimano Ultegra, R8100, 52/36T
• Crank Sizing:
  • Size 48 - 165mm
  • Size 51 - 165mm
  • Size 54 - 170mm
  • Size 56 - 170mm
  • Size 58 - 172.5mm
  • Size 61 - 172.5mm
• Power Meter: 4iiii Precision Pro, GEN3+ Dual Sided
• 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
• Saddle: Selle Italia NOVUS BOOST EVO SuperFlow Ti
• Cassette: Shimano Ultegra, R8100, 11-34T, 12-Speed
• Chain: Shimano M8100
• 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
• Tire: Vittoria Corsa Pro TLR G2.0 700x29c
• Max Tire Width: 34mm

Specifications subject to change