All of our knowledge in one frame. The R5ca is the crown jewel in the R-series, the industry gold standard in light weight, stiffness and strength. The engineers at Cervelo’s Project California have been pushing frame design with advanced lay-ups, and new technologies, the R5ca is what happens when you put all of that knowledge in a frame. This frame is for the discerning rider who wants the absolute lightest, stiffest and strongest bicycle all in one package.
1. Low weight to help your climbing.
2. Torsional stiffness for safety and confidence while descending.
3. BB stiffness to not waste any energy.
4. Vertical compliance and vibration damping for comfort on long rides & bad roads.
Even the most demanding pros fit properly on a stock Cervelo, no need for custom sizes. That's our conclusion after supporting hundreds of the world's best athletes. The reason we don't need customs where other bike companies do lies in our unique reach-based geometry. This results in six properly spaced-out sizes with minimal overlap.
The R3 and R5 have an updated version of this geometry, which finally suits both seasoned pros and regular riders alike. The solution is as simple as it is elegant. The main problem in most geometries is that bikes come with pretty short headtubes. Presumably this is done to appease the pros, but even for them the headtubes are now often on the short side. This explains why nowadays you mostly see stems with only a minus-6 degree angle in the peloton.
There are two issues with this:
Enter Cervelo's new geometry for the R3 and R5. The headtube is slightly longer in most sizes, but they allow for the same low position as before if used in combination with a minus-17 stem (now available from our team partner 3T and also Ritchey). And for regular riders, the new headtube lengths with a standard minus-6 stem offer the slightly higher handlebar height most of us need. Of course those who ride low can still go with the minus-17.
The other adjustment of the geometry is in the headtube angle for the smaller sizes. As you may know, we have never been fans of slacker headtube angles on smaller sizes as they usually compromise handling through a combination of poor fork geometry and improper weight distribution, sometimes coupled with a lack of frame stiffness. On the other hand, we do realize that toe overlap remains an issue for some of our customers. So we spent some time figuring out how to get the best of both worlds, how to change the steering geometry and combine it with a longer chainstay length to get good handling out of a slacker headtube. We then had these new geometries tested by several Cervelo TestTeam riders, in particular our "engineer-in-the-saddle" Roger Hammond (who happens to ride a smaller size frame). The results showed that - we have to admit - we were a bit too quick to dismiss slacker headtube angles outright. If executed well (a big if), it can result in a very well-handling bike. To find out for yourself, try the R3 or R5 with the new geometry at your Cervelo retailer.
To save a few more grams of bike weight, the R5ca is designed to use a zero offset post. Accordingly, with the saddle setback fixed, the seat tube angle has been decreased to achieve a 25mm rearward offset at the saddle height. This means the R5ca with zero offset post fits exactly the same as any road bike with 73 degree seat tube angle and traditional 25mm offset post.
Cervelo bikes are available for in store purchase only.