Colnago G4-X Shimano GRX 8204 ICBL Gravel Bike

A balanced gravel racing bike, to perform at its best in every context.

The G4-X is the result of optimizing all those factors that are important when you have to compete or go hard on dirt roads: handling, lightness, downhill rideability, stability, frame responsiveness, and, like all Colnago bikes, surprisingly wonderful to ride.

Please note that the specifications supplied by the manufacturer may be impacted by component stock availability at the factory assembly stage.

Specifications

• Series: V Series
• Model: Colnago G4-X

Frame kit

• Frame (material): Monocoque carbon.
• Fork (material, section notes): Carbon fork for disc brakes, external cables, section with round circumference
• Headset bearings: ACROS ss 42x52x7mm - 40x52x7mm
• Seatpost: Carbon seatpost, 0.15 offset, "D-Shape" section
• Through axles: Diameter: 12 mm. length 100 mm (front) - 142 mm (rear)

Drivetrain (GRX not pictured)

• Shifting system: SHIMANO CN-M8100
• Front derailleur: -
• Rear derailleur: SHIMANO RX-822
• Chain: SHIMANO CN-M8100
• Crankset: SHIMANO FC-RX820 42T
• Cassette: SHIMANO CS-M810 10-51T
• Bottom bracket: T47 ACROS
• Crank length
  • Sizes 450 - 480: 170 mm
  • Sizes 520 - 570: 172.5 mm

Brakes

• Brakes: SHIMANO BR-RX820
• Disc size: SHIMANO RT-CL800 Ø 160MM
• Brake lever: SHIMANO BL-RX820
• Brake caliper: SHIMANO BR-RX820

Wheels

• Wheels: Fulcrum Rapid Red 900 DB | 2-Way Fit Ready (for tyre and tubeless ready)
• Material: Rims: aluminium, Spokes: stainless steel.
• Rim height: Front: 24 mm; Rear: 24 mm
• Internal channel width: 22 mm
• Hubs: Aluminium, Sealed Cartridge Bearings
• Through axles: Front: HH12-100 - Rear: HH12-142
• Tyres: Pirelli Cinturato Gravel 40 TLR
• Maximum tyre size: 42 mm (nominal width)

Components

• Saddle: S.ITALIA NOVUS BOOST EVO Superflow FeC
• Handlebar: DEDA SUPERZERO GRAVEL ALLOY
  • Size 45 - 48: Width: 420 mm
  • Size 51 - 57: Width: 440 mm
• Stem: COLNAGO RS10 ALLOY
  • Size 45 - 48: Length: 90 mm
  • Size 51: Length: 100 mm
  • Sizes 54 - 57: Length: 110 mm
• Handlebar Tape: Colnago Grip Black
• Bottle cage: Colnago Matt Black (1x)

This bike will be shipped un-built in the manufacturer supplied packaging. We strongly recommend that this bike be assembled by a qualified bike mechanic or bike shop.
Any assembly undertaken without professional assistance, and subsequent damage from faulty assembly, is at the customers risk.

An assembly service for any "Completed Bike" purchases made through our click and collect service, can be arranged for an additional cost. Reach out to our customer service team for additional information.