The Cervelo Soloist Ultegra Di2 is 8. 6 watts faster and 267 grams lighter than the outgoing Soloist as a complete system, and the geometry is matched to the R5 race position so the fit intent carries through from frame to cockpit. Shimano Ultegra R8100 Di2 handles shifting without mechanical input, and the Vittoria Corsa N. EXT tubeless tires on Reserve carbon wheels close the loop between the frame's aero intent and the road surface beneath it. What Our Gearhead(R) Experts Are Saying:"The Reserve 42/49TA wheel pairing is the detail that makes this build click. The asymmetric depth keeps the front end stable in crosswinds while the deeper rear generates the aero return where it actually matters on a flat course."Heads up! We do our best to keep bike specs and images current, but occasional component changes can happen without warning, and sometimes the photos might not show the exact build you'll receive. If you want to double-check the details, our Gearhead(R) Experts are always here to help.