Cervelo S5 Ultegra Di2 2026

The fastest bike on the world tour, made faster. Meet the new S5, taking full advantage of relaxed UCI aero rules all while being 125 grams lighter. 

6.5 Watts faster than it's already fastest predecessor, and 8.7 watts faster than it's nearest competitor.

Featuring one piece cockpits and revised Reserve 57/64 wheels with DT Swiss hubs, no bike is faster on the flat.

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
Seatpost Sizing 48cm - 0mm, 51cm - 0mm, 54cm - 0mm, 56cm - 0mm, 58cm - 15mm, 61cm - 15mm
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 48cm - 165mm, 51cm - 165mm, 54cm - 170mm, 56cm - 170mm, 58cm - 172.5mm, 61cm - 172.5mm
Power Meter 4iiii Precision Pro, GEN3+ Dual Sided
Handlebar Sizing 48cm - 36cm, 51cm - 38cm, 54cm - 40cm, 56cm - 40cm, 58cm - 40cm, 61cm - 40cm
Stem Sizing 48cm - 80mm, 51cm - 90mm, 54cm - 100mm, 56cm - 100mm, 58cm - 110mm, 61cm - 120mm
1-piece Handlebar/Stem Cervélo HB19 Carbon
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
Accessories Cervélo Front Computer/Accessory Mount 887, Cervélo Rear Accessory Mount