Frame weight is 975g for a size 56cm which is very competitive
not only with leading aero bikes but also with regular road race
All these changes have netted a considerable aerodynamic
improvement. Cervélo claims it has reduced drag by 42g compared to
the previous S5 when measured with the rider in a wind tunnel, the
equivalent of 5.5 watts.
Other changes have also focused on frame stiffness and geometry.
Cervélo has increased the bottom bracket stiffness by a whopping
25% and the head tube is 13% stiffer, both changes which should
attribute a much more responsive ride. The geometry is more
agressive and mimics the R5, which was updated last year, in
possessing a lower bottom bracket, longer reach and lower
Another change we like is the clearance for wider tyres. Up to
28mm tyres will fit, so if you aren't racing you could consider
fitting wider tyres. More air volume equals more comfort, and
together with their carbon expertise, we're expecting this to be a
particularly comfy aero road bike (in relative terms).
13% increase in headtube (torsional) stiffness over the previous
S5, and a 25% increase in bottom bracket stiffness over the
The new S5 will be available in a range of builds, including
Ultegra and Dura-Ace Di2 and SRAM RED eTap, and as a frameset.
Want to deep dive into the tech side of the S5? Unsurprisingly
Cervélo has that covered, with a detailed Tech Paper available for
download. Get the PDF here.
We can't wait to get our hands on one of these for a ride, and
we'll be taking a closer look at the S5 here on the Bespoke blog.
Look out for more details coming soon.