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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.
Details
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
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 450 - 480
170 mm
Sizes 520 - 540
172.5 mm
Sizes 570
175 mm
Brakes
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
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
"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 cage
Colnago Matt Black (1x)
Other accessories
-
Sloping Geometry
Reach
371 mm
Stack
535 mm
O
524 mm
Fork
406 mm
Ss
71°
Sc
74°
C
430 mm
A
585 mm
BB drop
72 mm
Default Components
Default crank length
170 mm
Default stem length (Colnago SR10)
90 mm
Default handlebars width (Deda Superzero)
400 mm (C-C)
Default cockpit size (CC.01 Wide)
90mm - 400/460 mm (C-C)
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Tyres up to 45 mm
 "The G4-X can fit tires with a maximum nominal width of 45mm. Colnago")
The G4-X can fit tires with a maximum nominal width of 45mm.
Handlebars solutions
 "The Colnago G4-X is available with either the stem+handlebar 2-piece combination or with the integrated CC.01 Wide cockpit Colnago")
The Colnago G4-X is available with either the stem+handlebar 2-piece combination or with the integrated CC.01 Wide cockpit
Additional bottle holder
 "For longer adventures it may be necessary to add bags and bottle cages. This is why the G4-X is equipped with four mounting points for bottlecages or small bags. Colnago")
For longer adventures it may be necessary to add bags and bottle cages. This is why the G4-X is equipped with four mounting points for bottlecages or small bags.
T47 Bottom bracket
 "The G4-X will be mounted with the standard T47 bottom bracket Colnago")
The G4-X will be mounted with the standard T47 bottom bracket
Seat post clamp
 "There is a new seatpost lock, designed to withstand more tightening torque and guarantee stability and safety during intense off-road riding. Colnago")
There is a new seatpost lock, designed to withstand more tightening torque and guarantee stability and safety during intense off-road riding.
Speed and adventure
The perfect harmony of the elements, a balanced gravel bike.
Colnago G4-X is a bike that demands to be pedaled fast, without sacrificing handling and riding pleasure.
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Colnago Warranty
The product is covered by a 2-year statutory warranty. Colnago guarantees the product for a further year, bringing the total warranty to three years. To benefit from the extended warranty you must register your purchase on the Colnago website by clicking on this link.
Download
 "Questions? We’ll be pleased to give you the information you need. Colnago")
Questions? We’ll be pleased to give you the information you need.
