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Cervelo S5 Ultegra Di2 Disc Road Bike 2021

★★★★★ ★★★★★

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Product ID: 1287728

Four great reasons to buy your bike from Sigma Sports

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Sigma Sports has one objective - to help you find your perfect bike. Our friendly, knowledgeable staff ask you a series of questions to understand what type of rider you are and the type of riding you do. We can then identify the style of bike that best suits your needs.

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Finding the right size

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Cervelo S5 Ultegra Di2 Disc Road Bike 2021

With a wind-cheating silhouette, advanced grade frameset materials and innovative construction, the Cervelo S5 Ultegra Di2 Disc Road Bike is one of the quickest options available when animating vicious sprints, surging on lone breaks or thundering along in the local chaingang.

With its advanced carbon construction and aerodynamically sculpted tube profiles, the frameset of the S5 is laterally stiff, comfortable and incredibly aerodynamic. The innovative V-stem and svelte handlebars combine with the fork’s head tube shroud to lower drag further. Increased comfort and lower rolling resistance can be experienced thanks to the frameset-to-tyre clearance for up to 28mm wide rubber.

The carbon rims of the Reserve 50mm wheelset use their sophisticated profiles to slip through the air with heightened stability, and these are driven by the accurate and reliable Shimano Ultegra Di2 electronic gear configuration. The chainset receives a professional touch by way of an integrated power meter, and this allows the rider to track their performance in races and key training sessions. This chainset spins with significantly reduced friction thanks to the CeramicSpeed bottom bracket. Shimano Ultegra hydraulic disc brakes complete the build by donating their modulated stopping power to any weather conditions.


  • Designed for raw velocity, the S5 is stiffer and more aerodynamic than ever before, while also being comfortable and composed
  • A high-grade carbon frameset with a sophisticated lay up heightens lateral stiffness, increases comfort and remains lightweight
  • TrueAero sculpted tube profiles and an innovative fork-to-frame junction reduce aerodynamic drag markedly
  • 28mm frameset-to-tyre clearance
  • Custom handlebar and V-Stem configuration further improves aerodynamic performance
  • The geometry donates predictable handling while the stem spacer system guarantees a perfect riding position
  • Reserve 50mm DT350 carbon wheels are light, responsive and have aerodynamically tuned rim profiles
  • Shimano Ultegra Di2 electronic 11-speed gear setup is extremely accurate and dependable
  • Shimano Ultegra chainset with integrated 4iiii Precision dual-sided power meter provides invaluable rider performance feedback
  • CeramicSpeed bottom bracket gives tremendously low friction
  • Shimano Ultegra hydraulic disc brakes are powerful and modulated

Technical Specification

Frame Cervelo S5 All-Carbon, TrueAero tube profiles, integrated head tube to fork configuration, integrated headset 1” x 1-3/8”, 12x142mm thru-axle
Fork Cervelo All-Carbon, tapered S5 fork, external head tube nose section, 12x100mm thru-axle
Headset FSA IS2 1 x 1-3/8
Bottom Bracket Ceramic Speed 24
Stem Cervelo CS028 Carbon V-Stem
Handlebar Cervelo AB08 Carbon
Bar Tape Cervelo bar tape
Front Brake Shimano Ultegra 8070 hydraulic disc, with 160mm Shimano SM-RT800 rotor
Rear Brake Shimano Ultegra 8070 hydraulic disc, with 160mm Shimano SM-RT800 rotor
Brake Levers Shimano Ultegra 8070 hydraulic
Front Derailleur Shimano Ultegra Di2 8050
Rear Derailleur Shimano Ultegra Di2 8050, 11-speed
Shift Levers Shimano Ultegra Di2 8070, 11-speed
Chain Shimano CN-HG701, 11-speed
Cassette Shimano Ultegra CS-R8000, 11-30, 11-speed
Crankset Shimano Ultegra 8000 52/36 with 4iiii Precision dual-sided power meter
Front Wheel Reserve 50mm, DT350 hub, 24 hole, 21mm internal rim width, Center Lock disc interface, tubeless-ready tyre compatible
Rear Wheel Reserve 50mm, DT350 hub, 24 hole, 21mm internal rim width, Center Lock disc interface, tubeless-ready tyre compatible
Front Tyre Vittoria Corsa TLR G, 700x25mm, tubeless-ready clincher
Rear Tyre Vittoria Corsa TLR G, 700x25mm, tubeless-ready clincher
Saddle Prologo Dimension Nack
Seatpost Cervelo SP20 Carbon Aero Post
Pedals Available to be purchased separately
Accessories Cervelo handlebar front computer/accessory mount, Cervelo rear accessory mount

Built, Checked, Tuned and Tested

All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.

All bikes collected from our shop, are built, tested and ready to ride.

Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.

If you require any assistance please contact our Customer Care team.

Cervelo S5 Ultegra Di2 Disc Road Bike 2021 Sizing

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