Colnago G3X Shimano GRX 820 2 x 12V

From cyclocross to gravel. Fast on any terrain.

The Colnago racing soul triumphs on dirt roads. The G3-X is the gravel bike for tackling any type of terrain in any season, designed for riding on dirt and muddy terrain, comfortable even over long distances The G3-X is made with a carbon monocoque frame and is designed to be fitted with disc brakes; the chain stays are wide enough to fit tyres up to a maximum of 40 millimetres.


  • The G3-X is equipped with two protective plastic mudguards: one under the bottom bracket and one above the right chain stay to protect the chain from blows
  • For longer adventures it may be necessary to add bags and bottle cages. This is why the G3-X is equipped with two rivets on the top tube and two under the down tube
  • The grommet, usually a bolt-on plastic component, is now moulded to make it even lighter and offer the best shifting performance

Tech Specs

Frame kit

  • Frame (material): Monocoque carbon.
  • Fork (material, section notes): Carbon fork for disc brakes, external cables, section with round circumference
  • Headset: ID30,1 OD41 36°/45° ID40 OD52 45°/45°
  • Seatpost: Carbon seatpost, 0.15 offset, "D-Shape" section
  • Through axles: Diameter: 12 mm. length 100 mm (front) - 142 mm (rear)


  • Shifting system: Shimano GRX 820 2x
  • Front derailleur: Shimano GRX 2x: Shimano FD-RX820
  • Rear derailleur: Shimano GRX 2x: Shimano RD-RX820
  • Chain: Shimano GRX: Shimano CN-M8100 12V
  • Crankset: Shimano GRX 2x: 48-31T
  • Cassette: Shimano GRX 2x: 11-36 12v
  • Bottom bracket: Shimano SM-BB72-41B Press Fit Movement 86.5x41
  • Crank length: Sizes 42s - 48s: 170 mm; Sizes 50s - 54s: 172.5 mm; Sizes 56s - 58s: 175 mm


  • Brakes: Shimano RX-820, 160 mm Front / 160 mm Rear, RT-MT800-S rotors
  • Disc size: 160 mm Front/ 160 mm Rear
  • Brake lever: Shimano ST-RX820
  • Brake caliper: Shimano RX-820


  • 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)


  • Saddle: "Prologo" Kappa BK, "Selle Italia" Model X BB FEC
  • Handlebar: Deda Gravel 100, Sizes 46s: Width: 400 mm; Sizes 49s - 55s: Width: 420 mm, Sizes 58s: Width: 440 mm
  • Stem: Deda ZERO1, Size 46s: Length: 90 mm, Size 49s: Length: 100 mm; Sizes 52s - 55s: Length: 110 mm; Sizes 58s: Length: 120 mm
  • Handlebar Tape: Colnago Grip Black
  • Bottle cageColnago Matt Black (1x)

Please note: Images are for illustration purposes only.