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Cervélo S3 Disc ETAP

  • Integrated disc brake technologies into the World Championship winning S3
  • 9% stiffer, 40 grams lighter and 2 watts faster than the S3 rim brake
  • Sram Red ETAP providing the ultimate level of smoothness, effortless electronic shifting
  • A completely redesigned chassis that provides the best possible handling and control




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“The S3 Disc is joyous through a few twisty descents and encourages big lean angles. The brakes offer fantastic levels of control and modulation for fast cornering speeds. The swift, sharp steering means pinpoint accuracy, which aids apex hitting, high-speed descending and makes for a truly flickable bike that's great for navigating through the bunch or simply beating traffic.” - Bike Radar

Cervélo only produces a bike when the performance gains are big enough to justify an upgrade; integrated disc brake design, 9% faster, 40 grams lighter (frame weight) and 2 watts faster ... There has definitely been huge performance gains made. With design rooted in the Cervélo project California research facility the new S3 Disc translates to superior handling and control, meaning that speed is at your disposal. 

Full Specification


A completely redesigned chassis combines new, more robust airfoil sections with a rear triangle borrowed from Cervélo's revolutionary Rca road frame. Also featuring a dropped downtube which enhances frame stiffness while the flattened trailing edge makes bottles an integral part of the bike’s airfoil design. Overall improvements focus on all the perks you want in a workhorse of a bike: Future-Proof cables allow for easy set up of internal electronic, mechanical, or hydraulic shifting and braking lines.


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 caliper-mounting area and fine-tune interactions with the front wheel.


Re-engineered seatstays 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 other Cervélo disc platforms, this increases stiffness in the back end, leading to better handling in corners. Cervélo have 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. They 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.

Fork Cervélo All-Carbon, Tapered S3 Disc
Cassette SRAM PG1170 - 11-28t
Rear derailleur SRAM Red eTAP
Crankset SRAM Red
Handlebar Cervélo Aero, Carbon
Saddle Fizik Antares
Seatpost Cervélo Carbon, Aero
Wheelset ENVE SES 4.5 Carbon Clincher
Tyres Continental Grand Sport Race 700x23c
Front derailleur SRAM Red eTap