Pinarello F5 105 Di2 MOST Ultrafast Bike

The Pinarello F5 105 Di2 MOST Ultrafast Bike is Pinarello's all-around road bike for riders who want race-derived performance without stepping into the brand's flagship tier. Pinarello has been building bikes in Treviso, Italy since 1952, and the F-series carries that pedigree into a UCI-approved carbon package designed to handle climbing, descending, sprinting, and sustained endurance riding from the same machine. The Torayca T700 UD carbon frame is built around Pinarello's "All-Round Performance" ethos — aggressive enough for serious riders while remaining manageable across a full day in the saddle. Nine sizes from 43cm to 59.5cm cover a wide range of riders, and this MOST Ultrafast build arrives with 45mm-deep carbon wheels as standard.

Pinarello's TiCR™ internal cable routing system runs every brake hose and shifting cable through the frame and the E-TICR elliptical steer tube, eliminating external clutter from hood to hub. The elliptical profile isn't cosmetic — it increases torsional rigidity in the head tube area compared to a round steer tube of similar weight, translating to more precise steering on fast descents and technical corners. The F-Series Onda carbon fork carries Pinarello's signature asymmetric blade design, with differing left and right profiles that account for the unequal lateral forces produced by disc brake caliper placement and drivetrain loading. Underneath, the aero keel bottom bracket and integrated seat clamp contribute to the frame's structural efficiency. Tire clearance extends to 32mm, accommodating wider rubber for rough pavement, extended training days, or rides where grip matters more than outright speed — without requiring a wheel swap.

The MOST Ultrafast 45 wheelset defines this build. MOST is Pinarello's in-house component brand, and the Ultrafast 45 is a 45mm-deep carbon disc wheelset — front and rear — designed to pair with the F5's geometry and clearances. At $6,200 for a complete bike, 45mm carbon disc rims are an unusual inclusion; most bikes in this price bracket ship on alloy or shallow-profile carbon wheels, and purchasing an equivalent wheelset separately adds significant cost. The aerodynamic depth is present from the first ride, which changes how the bike behaves at pace. The cockpit follows the same MOST spec: Jaguar Claw Ultra Aero aluminum stem and handlebar, proportionally sized per frame, along with a MOST Lynx saddle and MOST Competition 700x30 tires. The F-series carbon seatpost completes a build where each component was chosen to complement the frame, not fill a price category.

Shimano 105 Di2 handles the drivetrain and braking. The R7170 hydraulic disc brake/shifter hoods pair with R7150 front and rear derailleurs for wireless 12-speed shifting across a 50/34 compact crankset and 11-34 cassette — a range that covers flat-road speed and genuine climbing without requiring a cassette swap. The R7170 hydraulic disc calipers with 160mm rotors at both ends deliver strong, consistent modulation in wet and dry conditions, with predictable feel on long descents. Shimano's 105 Di2 is a mature platform: firmware is well-established, dealer service is widely available, and the wireless architecture eliminates the external junction boxes that earlier Di2 generations required. Crank length is spec'd by frame size — 170mm through the smaller sizes up to 175mm for the largest — a detail that reflects the thoughtfulness of the build rather than a one-size-fits-all approach.

In Pinarello's lineup, the F5 sits between the more accessible entry models and the Dogma F at the top. It's a proper road bike capable of race use — not an endurance platform softened for comfort, but not as narrowly specialized as the flagship either. The combination of TiCR routing, T700 carbon construction, MOST Ultrafast 45 wheels, and Shimano 105 Di2 disc makes a coherent case at the price. The wide size range and 32mm tire clearance keep it accessible to a broader field of riders and road conditions. The Etna Black Matte finish is available across all nine sizes, from 43cm through 59.5cm.