GRAVEL ALL-ROUNDER

Colnago G4-X

A versatile gravel bike for a wide mix of terrain and ride types. Position 3 of 5, Balanced, scored at a middle size.

Type: Gravel All-rounder
Price: $4,935 to $10,108
Sizes: 45 to 57 (5)
Position: 3 · Balanced
Tire clearance: 45 mm

Match this bike

What Colnago says

In Colnago’s words: “A balanced gravel racing bike, to perform at its best in every context.”

Maximum tire clearance is 45 mm nominal width.
Four mounting points take bottle cages or small bags.

Source: Colnago, G4-X US product page, read October 26, 2026.

Published frame dimensions

Frame-only measurements in millimeters. Stem, spacers and handlebars change where your hands end up. Reach vs. typical compares each size with a typical gravel frame of the same stack.

Size	Stack	Reach	Wheelbase	Head angle	Standover	Reach vs. typical
45	535	371	Not published	71°	Not published	−8 mm
48	554	380	Not published	71.5°	Not published	−5 mm
52	573	390	Not published	71.5°	Not published	−2 mm
54	591	400	Not published	71.5°	Not published	+1 mm
57	610	410	Not published	71.5°	Not published	+4 mm

From Colnago’s geometry chart, checked October 26, 2026. Visit Colnago ↗

What the Position levels mean

5 · AggressiveLong and low for its sizeMore than 10 mm more reach than a typical frame with the same stack.Most frames here are race bikes.
4 · Semi-AggressiveSporty and stretched4 to 10 mm more reach than a typical frame with the same stack.Common on road and gravel race bikes.
3 · BalancedMiddle of the rangeWithin 4 mm of typical reach for its stack.Found on every type of road and gravel bike.
2 · Semi-RelaxedTaller front, shorter reach4 to 10 mm less reach than a typical frame with the same stack.Common on endurance and all-rounder bikes.
1 · RelaxedTallest front and shortest reach for its sizeMore than 10 mm less reach than a typical frame with the same stack.Common on endurance and adventure bikes.

Where this frame sits

Each colored dot is one G4-X size; gray dots are other current gravel frames. Shaded bands run from Position 1 Relaxed on the left to 5 Aggressive on the right.

How this frame scores

Compared with a typical gravel frame of the same stack, sizes run from −8 mm to +4 mm reach. Read at a middle-size stack of 583 mm, the G4-X scores 3 of 5 (Balanced). Its sizes sit in different shaded bands because makers add reach at different rates as frames get bigger.

Price and builds

$4,935 to $10,108 across 7 builds. Seven builds: Shimano GRX 820 2x, GRX 822 1x, GRX 717 Di2 1x, GRX Di2 825 2x, SRAM Rival XPLR, Force XPLR and Red XPLR.

See all 7 builds

Build	Groupset	Price
Shimano GRX 820 2x + Alloy Wheels	Shimano GRX 820 2x	$4,935
Shimano GRX 822 1x + Alloy Wheels	Shimano GRX 822 1x	$4,935
Shimano GRX 717 Di2 1x + Alloy Wheels	Shimano GRX 717 Di2 1x	$5,242
SRAM Rival XPLR 1x13 + Carbon Wheels	SRAM Rival XPLR 1x13	$5,812
Shimano GRX Di2 825 2x + Carbon Wheels	Shimano GRX 825 Di2 2x	$7,294
SRAM Force XPLR 1x13 + Carbon Wheels	SRAM Force XPLR AXS 1x13	$7,294
SRAM Red XPLR 1x13 + Carbon Wheels	SRAM RED XPLR AXS 1x13	$10,108

Colnago US list prices, checked October 26, 2026.

Comparable frames from other brands

The closest match to a size 52 G4-X from other brands, among current gravel frames. Same-type frames are listed first.

Compare these with the bike you ride now

Frame details and sources

Tire clearance: 45 mm
US product page feature text states a maximum nominal tire width of 45 mm ("Tyres up to 45 mm"); the same page’s specification table lists 42 mm. GnR stores the 45 mm feature statement, following the owner’s October 26, 2026 decision for the same conflict on the C68 Gravel.
Mounts: Four mounting points for bottle cages or small bags, per Colnago. No load limit is implied.
Geometry chart: Colnago G4-X geometry chart; model year not stated

Geometry: Colnago’s chart, checked October 26, 2026.
Maker description: Colnago, read October 26, 2026.
Prices: Colnago US list prices for complete bikes, October 26, 2026. Prices and stock change often.
Exact five-size chart from Colnago’s G4-X geometry image (owner-supplied). The chart lists no wheelbase or standover. Frame stack and reach exclude cockpit and spacers. Rider heights come from the C68 Gravel and G4-X section of Colnago’s US size guide.