Wilier Rapida 105 Di2

The cockpit is a one-piece carbon design — Wilier calls it the Z-Bar — that routes brake and derailleur lines internally from bar to frame with no exposed housing anywhere along the way. It's the same integrated philosophy Wilier uses on the Filante SLR ID2, and it does more than clean up the silhouette: fewer cable runs exposed to road grit means less maintenance over the life of the bike. The Filante SL carbon seatpost carries a 15mm offset and an integrated clamp that keeps the same clean lines running from the front end back to the rear axle.

Shifting duties fall to Shimano 105 Di2 R7150 derailleurs and R7170 shifters, running a 12-speed 11-34 cassette against 50/34 chainrings on a 105 R7100 crankset — a wide enough range to handle both flat group rides and steady climbing without feeling undergeared. Shimano 105 R7170 hydraulic disc brakes with 160mm front and 140mm rear rotors handle stopping power in wet or dry conditions alike. The Rapida rolls on Miche Asfalto 45 Carbon wheels front and rear, wrapped in Vittoria Zaffiro Pro V tires at 700x32 — a tire width chosen to balance low rolling resistance with real comfort on imperfect pavement.

Tire clearance goes up to 36mm, which opens this bike up to more than smooth tarmac. A rider can run the stock 32mm tires for club rides and fast group efforts, or size up toward the…