New Cervélo S2 launched +video

Cervélo’s entry-level aero road bike gets stiffer and more aero + video

by David Arthur @davearthur   November 7, 2013  

Cervélo has updated the S2, its entry-level aero road bike, with an all-new frame and fork that the company claims is not only more aerodynamic, but also stiffer. This follows the recently updated R3 and S3 bikes, shown at Eurobike a few months ago. 

The S2 originally started life as the Soloist many years ago, and really set the ball rolling for aero road bikes. Key to aero performance is reducing the frontal surface area, so the S2 used to have a straight 1 1/8in non-tapered steerer tube. Now though it has a tapered head tube which Cervélo claim increases stiffness by a whopping 32%.

Extra stiffness has also been achieved by the use of the company’s own BBRight bottom bracket. BBRight uses a 30mm diameter spindle and press-fit 30 bearings, but the key difference is that on the non-driveside the bearing is pushed outwards by 11mm. This wider shell means that the down tube, seat tube and chainstays can be oversized. The increased stiffness claim from this change is 20% over the old S2.

Aero changes have been made, but Cervélo don’t give any figures as to how much more aero the new frame is. We’re guessing it’s some. The seat tube now has a cutaway section so it curves around the rear wheel, and is said to improve airflow over the wheel. The down tube has been designed with a water bottle in mind - there’s a squared off tail section at the bottle mount which the company says acts as a “continuation of the airfoil to smooth airflow and minimise aero drag”. This has already been used on the new S3, and is something we’ve also seen on other aero bikes like Giant’s Propel.

Other changes include an internal seat clamp replacing the previous external item, and the skinny seatstays borrowed from the RCA. There’s also clearance for 25mm tyres which is handy if you are into the benefits of wider tyres.

The cable routing is still internal, but they’ve moved the entry port from the top tube to the down tube, which looks far neater. Cervélo calls the cable routing ‘future proof’ so we can assume that means it’s fully compatible with all mechanical and electronic groupsets. And any future groupset tech, such as a hydraulic gear system, as they let slip to us at Eurobike.

Cervélo will only be offering the S2 as a full bike with Shimano 105 costing £2,399. 

More at

12 user comments

Oldest firstNewest firstBest rated

Dodgy line choice in that bottom photograph - straight into a big patch of gravel! Hope that's not a reflection on the handling of this bike Smile
More seriously this does look like a lovely bit of kit and I'm glad they havent gone for the brakes mounted on the chainstays as some competitors have - that just looks like a maintenance nightmare if you ride in anything less than perfect weather.

posted by rockfield [68 posts]
7th November 2013 - 14:11


How about a Cervelo S2 disc, perfect bike for me then.
Don't really have a problem with chain stay mounted brakes. I suspect they don't get any dirty than above and may get splashed cleaner in reality.

We're all entitled to a reasonable opinion!

posted by Guyz2010 [298 posts]
7th November 2013 - 14:34


What's the main difference to the S3? Are the tube shapes the same? Regardless, it looks lovely and more than capable.

posted by nod [61 posts]
7th November 2013 - 14:34


Guyz2010 wrote:
How about a Cervelo S2 disc, perfect bike for me then.

Can we ban this guy?

Sir Velo

Raleigh's picture

posted by Raleigh [1734 posts]
7th November 2013 - 14:40


I'd be interested to see a comparison of weight v cost for the frame & forks for the S2/3/5 in all variants. This S2 looks a bit like the old S5.


posted by Timsen [61 posts]
7th November 2013 - 15:14


'Entry-level' bikes cost £2K nowadays do they?

posted by Joeinpoole [380 posts]
7th November 2013 - 15:17


Joeinpoole wrote:
'Entry-level' bikes cost £2K nowadays do they?

they do if you're buying a Cervelo, yes. although their entry level *is* quite high...

Dave Atkinson's picture

posted by Dave Atkinson [7746 posts]
7th November 2013 - 15:33


The S2 might be Cervelo's entry level but Cervelo isn't really entry level at all

posted by jarredscycling [457 posts]
7th November 2013 - 18:26


Cervelo website doesn't show the new S3. Just the S5 and this S2. Guess the S3 turned to the S2.

posted by futurefunk [29 posts]
7th November 2013 - 22:04


S1 and 3 both phased out 2010/11

Though everyone knew that?

Sir Velo

Raleigh's picture

posted by Raleigh [1734 posts]
7th November 2013 - 22:57


posted by snook [8 posts]
8th November 2013 - 10:26


Wish they'd stick some more aero / beefy forks on it..looks odd at the front end due to that...apart from that it looks good..

posted by NeilXDavis [118 posts]
11th November 2013 - 12:24