Cervelo S3 Frame 2009
The Cervelo S3 is the most aero road frame on the market,adding cervelo's lightweight carbon and you have a winning combination.
Cervlo invented the aero road frame, and continues to lead the category. Aero road frames are the most difficult frames to design, as they have to be everything in one: aero, light, stiff, comfortable. Cervlo has worked to optimize this balance between the various requirements since its inception 13 years ago.
For the S3, the engineers at vroomen.white.design used the R3 seatstay technology, rotated the stays 90 degrees and gave them a proper Cervlo aero shape. This reduces the weight, increases the vertical compliance and improves the aerodynamics. Sounds simple, but the structural design is extremely complex, which is why only Cervlo has such stays. The chainstays were also redesigned to optimize aerodynamics. Finally, the cable routing system (ICS2) is the first to have cable entries through the top of the toptube without sacrificing shifting performance.