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.
S3 DISC ENGINEERING
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 - Carbon Tapered S3 Fork for Disc
Seatpost - Cervélo AP17 Aero
Handlebar - FSA Energy Compact
Stem - FSA SLK
Rear Derailleur - Shimano Ultegra 6800 11 speed
Front Derailleur - Shimano Ultegra 6800 11 speed
Shifters - Shimano ST-RS685 11 speed
Brake Calipers - Shimano BR-RS805 Hydraulic Disc
Cassette - Shimano Ultegra 6800 11 speed
Chain - KMC X11L
Crankset - FSA SLK 52X36
Saddle - FI’ZI:K Antares
Wheels - HED ARDENNES PLUS GP DISC
Tires - Continental Grand Sport Race 700X23C
Headset - FSA IS2 1-1/8 X 1-3/8”
Bottom bracket - FSA PF30
Brake Rotor - Shimano RT81 160MM