Which size or configuration labels have geometry for the 2026 Colnago G4-X Shimano?

Geometry is listed for 450, 480, 520, 540, and 570.

What are the reach and stack of the 2026 Colnago G4-X Shimano in size 520?

In size 520, reach is 390 mm and stack is 573 mm.

What is the head tube angle of the 2026 Colnago G4-X Shimano?

The head tube angle is 71.5 degrees in size 520.

What does the 2026 Colnago G4-X Shimano GRX Di2 825 2x ship with?

The stock build includes Colnago G4-X, Colnago G4-X Carbon, Shimano GRX, and Fulcrum Lite ER.

Which years of the Colnago G4-X are on Quiver?

Quiver has the Colnago G4-X for 2026 and 2024.

2026 Colnago G4-X Shimano geometry and specs

Key facts

Brand: Colnago
Model: G4-X
Model year: 2026
Frame: Shimano
Type: Gravel
Geometry labels: 450, 480, 520, 540, and 570
Fork: Colnago G4-X Carbon
Wheels: Fulcrum Lite ER
Geometry: Complete for every size
Source: colnago.com
Checked: Sep 3, 2026

Geometry by size

2026 Colnago G4-X Shimano geometry by size
Measurement	450	480	520	540	570
Reach(mm)	371	380	390	400	410
Stack(mm)	535	554	573	591	600
Head tube angle(°)	71	71.5	71.5	71.5	71.5
Seat tube angle(°)	74	74	73.5	73	73
Effective top tube(mm)	524	539	560	581	596
Chainstay length(mm)	430	430	430	430	430
BB drop(mm)	72	72	70	70	70
Fork length(mm)	406	406	406	406	406

How to read a geometry chart

Stock build

12 parts

Frame

Colnago G4-X

Frame

Suspension

Colnago G4-X Carbon

ForkWheel size 700cSteerer diameter 1 1/8" StraightBrake mount disc

Drivetrain

Shimano GRX

Cassette

Shimano GRX RX620

CranksetChainring interface 2x

Shimano GRX

ChainringMount standard Direct Mount

Shimano GRX

Bottom bracketShell standard T47

Wheels & Tires

Fulcrum Lite ER

WheelsetInternal rim width 23mmRim material AluminumNot tubeless ready

Brakes

Shimano GRX RX820

BrakeFluid type MineralCaliper mount Flat Mount

Shimano GRX RX820

Rotor

Cockpit

Acros Sealed Bearings

Headset

Seatpost & Saddle

Colnago Carbon D-Shape

SeatpostOffset / setback 0.15mmMaterial Carbon

Selle Italia Novus Boost Evo Superflow

Saddle

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Manufacturer

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Quick answers

Which size or configuration labels have geometry for the 2026 Colnago G4-X Shimano?: Geometry is listed for 450, 480, 520, 540, and 570.
What are the reach and stack of the 2026 Colnago G4-X Shimano in size 520?: In size 520, reach is 390 mm and stack is 573 mm.
What is the head tube angle of the 2026 Colnago G4-X Shimano?: The head tube angle is 71.5 degrees in size 520.
What does the 2026 Colnago G4-X Shimano GRX Di2 825 2x ship with?: The stock build includes Colnago G4-X, Colnago G4-X Carbon, Shimano GRX, and Fulcrum Lite ER.
Which years of the Colnago G4-X are on Quiver?: Quiver has the Colnago G4-X for 2026 and 2024.