Carlos Sastre rode a Cervélo R5 at this year's Tour de France, a new bike formally known as Project California. Using a similar frame design to the R3, the big additions are the BBright bottom bracket and a 1 3/8in tapered headset bearing for increased front-end stiffness, all with a weight of under 700g.

The BBright concept pushes the non drive bearing out to further increase axle rigidity without affecting Q-factor. The asymmetrical down tube is bigger at the head tube and because of the BBright, has an extra wide pedalling platform. The BBright also affects the seat tube that is now asymmetrical and widened, as is the non-drive side chainstay.

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