Is the Cervélo R5 Dura-Ace Di2 worth it over the Ultegra Di2 version?

The frameset is the same; the difference is the groupset and a few components. Dura-Ace saves some weight and adds prestige, but Ultegra Di2 shifts nearly as well for thousands less. Choose Dura-Ace if weight and top-tier spec matter more than value.

What sizes does the R5 come in?

Listings show 51cm and 56cm frames. Cervélo's R5 geometry is race-oriented, so check reach and stack against your current bike before choosing.

Does it come with pedals?

No. Bikes at this level are sold without pedals, so budget for the pedal system you use. Confirm the exact build spec with the store before ordering.

Can I fit wider tires?

The current R5 frame clears tires up to about 34mm, which is wider than older race bikes. That allows lower pressures and more comfort on rough roads.

When is the best time to buy?

New model-year bikes usually see the deepest discounts late in the season or when a successor is announced. With only two stores listing it new, compare both before buying.