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Cervelo S5 Ultegra Disc Road Bike 2021

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S5 Ultegra Disc Road Bike 2021

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Product ID: 1287481

Four great reasons to buy your bike from Sigma Sports

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Expert Advice & Rider ID

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

Riding a bike that fits you perfectly will help keep you injury-free and ensure you enjoy riding further for longer in total comfort. We check your measurements on a jig to ensure your optimal set-up.

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Bike Handover

When you collect your new bike we'll double-check your position and make any micro-adjustments if required. We'll also discuss the controls on your bike as well as maintenance tips.

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First free safety check

We offer a free safety check after six weeks or 200 miles, so you can keep riding in confidence. Visit us now in-store to discuss your new bike.

Cervelo S5 Ultegra Disc Road Bike 2021

Combining a holistic design approach to aerodynamics with a state of the art carbon construction, the Cervelo S5 Ultegra Disc Road Bike infuses speed into any high paced riding scenario.

The high-grade of carbon utilised in the construction of the frameset is laid via a meticulous format to result in vast lateral stiffness and low weight. These traits are joined by sculpted tube profiles, an innovative fork and head tube junction and a visually striking V-Stem that work in unison to dramatically lower aerodynamic drag.

Aerodynamic drag is further reduced by the Reserve wheelset that uses its wide and bulbous, 50mm deep carbon rim sections to carve through the air, whatever the yaw angle, with heightened stability. These wheels have a wide internal width to support the use of broader, quicker rolling and more comfortable tyres and these are accepted into the frameset thanks to its generous tyre clearances.

Gear changes are courtesy of the dependable Shimano Ultegra setup while stopping duties are taken care of with composure and accuracy by the matching hydraulic disc brakes.


  • 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 11-speed gear setup is extremely accurate and dependable
  • 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 Cervélo All-Carbon, Tapered S5 fork, external head tube nose section, 12x100mm thru-axle
Headset FSA IS2 1 x 1-3/8
Bottom Bracket Cervelo JY-BB 24
Stem Cervelo CS028 Carbon V-Stem
Handlebar Cervelo AB08 Carbon
Bar Tape Cervelo bar tape
Front Brake Shimano Ultegra 8020 hydraulic disc, with 160mm Shimano SM-RT800 rotor
Rear Brake Shimano Ultegra 8020 hydraulic disc, with 160mm Shimano SM-RT800 rotor
Brake Levers Shimano Ultegra 8020 hydraulic
Front Derailleur Shimano Ultegra 8000
Rear Derailleur Shimano Ultegra 8000, 11-speed
Shift Levers Shimano Ultegra 8020, 11-speed
Chain Shimano CN-HG701, 11-speed
Cassette Shimano Ultegra CS-R8000, 11-30, 11-speed
Crankset Shimano Ultegra 8000, 52/36 chainrings
Front Wheel Reserve 50mm, DT350 hub, 20 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 or contact Customer Care. We do not install accessories to bikes, including mudguards.

Cervelo S5 Ultegra Disc Road Bike 2021 Sizing

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