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Cervélo S3 Disc Ultegra 8070 Di2 2018

  • Brand-new technologies on a brand-new bike the S3 disc is now available with Shimano components
  • Re-designed fork shape is 19grams lighter and 2 watts faster than the previous S3 design
  • 12mm thru-axles provide stiffness at the junction where the wheels and frame meet
  • Cable-entry system is re-enginnered and tidy providing smooth shifting and crisp stopping power



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Product Information

Cervélo S3 Disc Ultegra 8070 Di2 2018

Cervélo will only bring out a new bike in their range when there is a big enough jump in performance engineering and technology to justify the cost and investment from the consumer. This time Cervélo have gone a step further, with the S3 disc Cervélo have re-designed the fork, disc brake system and cable-entry system from scratch. Featuring the all-new Shimano Ultegra Di2 8070 groupset, the S3 provides fast, smooth and comfortable shifting as well as crisp, reliable and all-year-round durable hydraulic disc brakes. Cervélo has ensured stiffness by fitting 12mm thru-axles that feature a yield design at the junction where the frame and wheel meet. The S3 is not just another "fast" bike. The S3 delivers performance that is reliable. Performance that features the very latest, most innovative technologies, that are ensured to have you leading, not chasing.  

Full Specification




The all-new S3 Disc fork features a re-engineered leg airfoil that’s 19g (~2 watts) faster than an equivalent S3 fork. The disc braking system also allowed our engineers to raise the fork crotch to reduce the low-pressure zone behind the crown while widening the stance of the legs to better blend with the calliper-mounting area and fine-tune interactions with the front wheel.


Re-engineered seat stays and chainstays, inspired by the Cervélo R3 Disc, have been optimized to work in tandem with the disc brakes to provide the best possible control and handling. New rear drop-outs, meanwhile, use 12mm thru-axle technology to improve performance still further, while creating a stable and stiff wheel-to-frame junction and yielding better brake alignment. As with our other disc platforms, this increases stiffness in the back end, leading to better handling in corners. We’ve also boosted bottom-bracket stiffness on the S3 Disc for better handling and power transfer to the pedals.


A redesigned cable routing system takes the signature side-entry cable routing system of the S3 and incorporates a new style of left-side entry to accommodate the hydraulic hose while providing a tidy access point for wired electronic shifting systems. Just one more detail to which Cervélo has paid careful attention. We also imported the internal battery mounting feature from the Cervélo S5 in order to better conceal the Shimano Di2 battery inside the downtube, with access through the bottom-bracket cable guide mounting hole.


Frame: Cervelo S3 Carbon

Fork: Cervélo All-Carbon, Tapered S3 Fork For Disc

Front Derailleur: Shimano Ultegra Di2 8050

Rear Derailleur: Shimano Ultegra Di2 8050, 11spd

Number of Gears: 22

Shifters: Shimano Ultegra Di2 8070, 11spd

Bottom Bracket: BBB Bottom fit Bbo-72, Pf30 Threaded

Cassette: Shimano Ultegra Cs-R8000, 11-28

Chain: Shimano Cn-Hg701, 11 Speed

Brakeset: Shimano Ultegra 8070

Handlebars: Cervelo Aero AB04

Stem: Cervélo Ultra Light Alloy Stem

Headset: FSA Is2 1-1/8 X 1-3/8”

Wheelset: Enve Ses 3.4 Disc

Tyres: Continental Grand Sport Race 700 X 23c

Saddle: Fi’zi:k Antares R7

Seatpost: Cervélo Carbon, Aero SP17

Size Guide