This all-new R5 is an incredibly light (5.97kg in RED and Dura-Ace builds) road bike that’s also stiff enough to compete at the highest levels of professional cycling. 
It’s easy enough to make a light bike, but to make a light bike that’s stiff enough to accelerate quickly and transfer power from the sport’s biggest motors? That’s another challenge entirely. R5 is the bike for big days in the high mountains of the Tour de France, and the punishingly steep climbs of the Vuelta a Espana. Bikes built for the mountains must not only accelerate rapidly and climb exceptionally, but descend confidently and predictably. 
 
Super lightweight 
The new R5 in a size 56 builds up to just 5.97kg, a full 900 grams under the UCI’s minimum weight limit. The frame is just 651 grams (size 56), and the fork is 298 grams. In addition to the 100g reduction in frame/fork weight, Cervelo turned their attention to every single component on the bike, for a total weight reduction of 326g from all Cervelo components.

Race-Ready Fit Geometry
While the handling geometry on the new R5 is nearly the same (aside from a small change to BB drop to account for 29mm tires), Cervelo changed the fit geometry to match that of the S5. Whether you’re switching between the models like Team Visma|Lease A Bike or R5 is your only ride, you’ll be in a stronger position for the fastest group rides.

One-Piece Handlebar/Stem
The all-new HB18 bar/stem not only dropped nearly 150 grams from the weight of the bike, but it also helps the bike be two Watts more aerodynamic than the previous R5. Cervelo applied learnings from the S5 handlebar to develop a comfortable, fast, and stiff handlebar, ideal for big days in the saddle and hard fights to the line. All bar sizes are UCI-legal, even in light of the most recent regulations change.

Ultralight Reserve 34 | 37 SL Wheels
Designed specifically for R5, the all-new Reserve 34 | 37 SL wheelset helped. Cervelo drop an additional 60 grams. The new wheels deliver the same strength and stiffness as the old ones, but Cervelo refined the layup to save weight without hampering performance.
 
The new R5’s one-piece bar and stem were responsible for a significant part of the weight reduction of the bike, and we know that a perfect fit is a critical part of getting the most out of your new bike. Cervelo made 15 different size combinations, and when you buy an R5, we will help you get the right size.