Colnago V4Rs Shimano Ultegra R8170 Di2
Please note: The bikes are assembled according to the manufacturer's specifications with default features according to size. For any assembly requests or specifications other than the basic ones, please contact our costumer service directly before purchase.
Pictures displayed are purely indicative.
For further information and customisation (size, color, etc) contact our Customer Service.
V4Rs - Built to do just one thing: to win
The V Series Colnago means just one thing: a bicycle made for winning races. Every detail is curated and optimized to let Pro riders dominate the most important races WorldWide, such as Monuments and Tour de France.
This V4Rs is equipped with Shimano Ultegra R8170 Di2 groupset and the following wheel variants:
Fulcrum Racing 600DB
This is the basic model of the Racing DB family, a solution that ensures performance and reliability. In training or during rides on asphalt with the gravel bike, the great versatility of these wheels is guaranteed by the new low-profile 24mm aluminium rims with 20mm internal channel in the 2 Way Fit version, a technical solution that makes the Racing 600 DB wheels suitable for excelling in various situations, on climbs as well as in windy conditions, and for accommodating generous tyres.
Fulcrum Wind 420DB
The combination of attention to aerodynamics and versatility creates Wind 420DB. It goes without saying that the design of the 40mm rim is the direct descendant of the 55mm profile: all the solutions developed for the higher profile have been brought back here, in a less specialised version.
Features
The new CC.01
Colnago Cockpit CC.01 has a drag surface reduced by up to 16% compared to the cockpits mounted on V3Rs, and at the same time the shape has been designed as a NACA-derived profile in order to have the minimum impact on the air flow, which is laminar and clean while impacting the components. This aerodynamic evolution was carried out without reducing the cockpit’s overall stiffness, which is as important as aerodynamics in sprint and acceleration.
Aerodynamic data
The performances of V4Rs are those of an aero bike. Compared to the V3Rs, in a real race setup (tested in the wind tunnel with an athlete pedalling at 50kph with 1 bottle and one empty bottle cage) Colnago measured an aerodynamic saving of 3%, corresponding to approx. 13.2 watt. With an advanced aero setup (aero wheels and aero Colnago Computer support) the bike had an aerodynamic saving of 6% (approx. 27.7 watts saved)
Headtube geometry
Its shape has been revised and perfectly integrated with the new lightweight fork (designed to allow an effective tire clearance up to 32mm) and with the new cockpit. Although the head set upper bearings are bigger than those of the V3Rs, allowing the cables to run inside without the need of the D-Shaped steerer column and enhancing the overall front-end stability, the overall shape has a better drag.
Accurate measuring
Colnago created internal methodologies to replicate the loading forces of standing-on-pedals and seated positions, and check the overall frame deformation and stiffness. Colnago was able then to define what it called RDS (Real-Dynamic Stiffness), and characterize them in combined multi-load conditions.
Robustness
The new V4Rs significantly improves the crash worth of the most exposed parts which may be subjected to impact in racing conditions. An example is given by the completely new designed seat stays, which, besides their more aerodynamic shape, also significantly improve the flexural and impact resistance. The robustness of this design also minimizes the need of maintenance.
Better handling
The weight distribution has changed from the V3Rs. The front fork is now lighter and the overall weight of the frame kit + handlebar setup has been decreased of 56 grams. The result is a better handling in corners and more safety and precision when going downhill.
Technical Specifications
Frame
- Frame (material) Colnago V4Rs Monocoque carbon frame
- Fork (material, notes section): Carbon fork for disc brakes, integrated cables, 1"1/8 section
- Headset: ID:35 OD:47 36°/45° CeramicSpeed SLT Treated Bearings
- Seatpost: Carbon seatpost, 0.15 offset, ‘D-Shape’ section
- Through-bolt: Diameter: 12 mm. length 100 mm (front) - 142 mm (rear)
Transmission
- Rear Derailleur: Shimano Ultegra R8170 Di2 Disc - 12v
- Front Derailleur: Shimano FD-R8150
- Rear Derailleur: Shimano Shadow RD-R8150
- Chain: Shimano CN-M8100 12V
- Crankset: 52-36T option 1 (default); 50-34T option 2
- Sprocket set: 11-30T option 1 (Default); 11-34T option 2
- Bottom Bracket: T47 Shimano with Steel Bearings
- Crank length: 170 mm option 1 (Standard for sizes 420 - 485); 172.5 mm option 2 (Standard for sizes 510 - 530); 175 mm option 3 (Standard for sizes 550 - 570)
Brakes
- Brakes: Shimano Ultegra R8170, 160 mm Front / 140 mm Rear, RT-CL900 rotors
- Disc size: 160 mm Front/ 140 mm Rear - RT-CL800 rotors
- Brake lever: Shimano ULTEGRA ST-R8170
- Brake Caliper: Standard Flat Mount
Wheels
- Rims: Vision SC45
- Material: Carbon (FF80)
- Rim height: 42 mm
- Inner rim width: 23 mm
- Hubs: Aluminum, Low flanges. Sealed bearing, Adjustable
- Through-bolt: Front: HH12-100 - Rear: HH12-142
- Tyres: Pirelli PZero Race 700x28
- Max. tyre size: 30 mm (nominal width)
Components
- Saddle: Scratch M5 Tirox 140 Hard Black, Selle Italia Novus Boost EVO TI316 Superflow (subject to stock availability)
- Handlebar: Colnago CC.01 integrated Cockpit - regular geometry
- Handlebar stem: CC01 integrated cockpit
- Handlebar Tape: Colnago Grip Black or Colnago WT23 (for WT24 colour scheme only)
- Bottle cage: Colnago Matt Black (1x)
- Other accessories: Cockpit integrated multitool
Default components
Size 420
- Default crank length: 170 mm
- Default stem length: 90 mm
- Default handlebar width: 390 mm
Size 455
- Default crank length: 170 mm
- Default stem length: 100 mm
- Default handlebar width: 390 mm
Size 485
- Default crank length: 170 mm
- Default stem length: 110 mm
- Default handlebar width: 390 mm
Size 510
- Default crank length: 172.5 mm
- Default stem length: 110 mm
- Default handlebar width: 410 mm
Size 530
- Default crank length: 172.5 mm
- Default stem length: 120 mm
- Default handlebar width: 410 mm
Size 550
- Default crank length: 175 mm
- Default handlebar stem length: 120 mm
- Default handlebar width: 430 mm
Size 570
- Default crank length: 175 mm
- Default stem length: 130 mm
- Default handlebar width: 430 mm