bike geometry

Colnago G4-X 2026

Compare size-specific bike geometry, including reach, stack, angles, wheelbase and the measurements that influence fit and handling.

Colnago › G4-X › Standard › G4-X

G4-X geometry measurements

Choose the recorded size and configuration. Geometry figures can change by size; RideDNA does not collapse those values into one misleading answer.

What is the reach of the Colnago G4-X 2026?

Reach is the horizontal distance from the bottom bracket to the top of the head tube. Also searched as frame reach.

Configuration	Size	Reach	Source
G4-X geometry	52	390 mm	Manufacturer-published
G4-X geometry	54	400 mm	Manufacturer-published
G4-X geometry	XS	371 mm	Manufacturer-published
G4-X geometry	48	380 mm	Manufacturer-published
G4-X geometry	57	410 mm	Manufacturer-published

What is the stack of the Colnago G4-X 2026?

Stack is the vertical distance from the bottom bracket to the top of the head tube. Also searched as frame stack.

Configuration	Size	Stack	Source
G4-X geometry	52	573 mm	Manufacturer-published
G4-X geometry	54	591 mm	Manufacturer-published
G4-X geometry	XS	536 mm	Manufacturer-published
G4-X geometry	48	554 mm	Manufacturer-published
G4-X geometry	57	610 mm	Manufacturer-published

What is the effective top tube of the Colnago G4-X 2026?

Effective top tube is the horizontal distance between the head-tube and seat-tube centerlines. Also searched as ETT, virtual top tube, horizontal top tube.

Configuration	Size	Effective top tube	Source
G4-X geometry	52	559.7 mm	RideDNA-derived
G4-X geometry	54	580.7 mm	RideDNA-derived
G4-X geometry	XS	524.7 mm	RideDNA-derived
G4-X geometry	48	538.9 mm	RideDNA-derived
G4-X geometry	57	596.5 mm	RideDNA-derived

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

Head tube angle describes the steering-axis angle relative to the ground. Also searched as HTA, head angle, steering angle.

Configuration	Size	Head tube angle	Source
G4-X geometry	52	71.5 °	Recorded geometry
G4-X geometry	54	71.5 °	Recorded geometry
G4-X geometry	XS	71 °	Recorded geometry
G4-X geometry	48	71.5 °	Recorded geometry
G4-X geometry	57	71.5 °	Recorded geometry

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

Seat tube angle describes the seat-tube angle relative to the ground. Also searched as STA, seat angle, effective seat angle.

Configuration	Size	Seat tube angle	Source
G4-X geometry	52	73.5 °	Recorded geometry
G4-X geometry	54	73 °	Recorded geometry
G4-X geometry	XS	74 °	Recorded geometry
G4-X geometry	48	74 °	Recorded geometry
G4-X geometry	57	73 °	Recorded geometry

What is the trail of the Colnago G4-X 2026?

Trail is the ground distance between the steering-axis intercept and the front tire contact point. Also searched as fork trail, mechanical trail.

Configuration	Size	Trail	Source
G4-X geometry	52	61.7 mm	RideDNA-derived
G4-X geometry	54	62.7 mm	RideDNA-derived
G4-X geometry	XS	54.8 mm	RideDNA-derived
G4-X geometry	48	52 mm	RideDNA-derived
G4-X geometry	57	62.9 mm	RideDNA-derived

What is the wheelbase of the Colnago G4-X 2026?

Wheelbase is the distance between the front and rear wheel axles. Also searched as axle-to-axle length.

Configuration	Size	Wheelbase	Source
G4-X geometry	52	1033.3 mm	RideDNA-derived
G4-X geometry	54	1048.4 mm	RideDNA-derived
G4-X geometry	XS	1015.6 mm	RideDNA-derived
G4-X geometry	48	1025.6 mm	RideDNA-derived
G4-X geometry	57	1064.4 mm	RideDNA-derived

What is the chainstay length of the Colnago G4-X 2026?

Chainstay length, also called rear center, is the distance from the bottom bracket to the rear axle. Also searched as Chainstay, rear center, rear centre.

Configuration	Size	Chainstay length	Source
G4-X geometry	52	430 mm	Recorded geometry
G4-X geometry	54	430 mm	Recorded geometry
G4-X geometry	XS	430 mm	Recorded geometry
G4-X geometry	48	430 mm	Recorded geometry
G4-X geometry	57	430 mm	Recorded geometry

What is the bottom bracket drop of the Colnago G4-X 2026?

Bottom bracket drop is the vertical distance from the wheel-axle line down to the bottom bracket. Also searched as BB drop.

Configuration	Size	Bottom bracket drop	Source
G4-X geometry	52	70 mm	RideDNA-derived
G4-X geometry	54	70 mm	RideDNA-derived
G4-X geometry	XS	72 mm	RideDNA-derived
G4-X geometry	48	72 mm	RideDNA-derived
G4-X geometry	57	70 mm	RideDNA-derived

What is the front center of the Colnago G4-X 2026?

Front center is the distance from the bottom bracket to the front wheel axle. Also searched as front centre.

Configuration	Size	Front center	Source
G4-X geometry	52	613 mm	Manufacturer-published
G4-X geometry	54	628 mm	Manufacturer-published
G4-X geometry	XS	596 mm	Manufacturer-published
G4-X geometry	48	606 mm	Manufacturer-published
G4-X geometry	57	644 mm	Manufacturer-published

What is the fork offset of the Colnago G4-X 2026?

Fork offset is the perpendicular distance between the steering axis and the front axle. Also searched as fork rake, rake.

Configuration	Size	Fork offset	Source
G4-X geometry	52	48 mm	RideDNA-derived
G4-X geometry	54	48 mm	RideDNA-derived
G4-X geometry	XS	48 mm	RideDNA-derived
G4-X geometry	48	48 mm	RideDNA-derived
G4-X geometry	57	48 mm	RideDNA-derived

What is the seat tube length of the Colnago G4-X 2026?

Seat tube length is the recorded length of the frame's seat tube; measurement conventions can differ by manufacturer. Also searched as Seat tube, seat tube, frame size.

Configuration	Size	Seat tube length	Source
G4-X geometry	52	520 mm	Recorded geometry
G4-X geometry	54	540 mm	Recorded geometry
G4-X geometry	XS	450 mm	Recorded geometry
G4-X geometry	48	480 mm	Recorded geometry
G4-X geometry	57	570 mm	Recorded geometry

What is the fork length of the Colnago G4-X 2026?

Fork length is the axle-to-crown distance recorded for the fork. Also searched as axle to crown, A2C.

Configuration	Size	Fork length	Source
G4-X geometry	52	406 mm	Manufacturer-published
G4-X geometry	54	406 mm	Manufacturer-published
G4-X geometry	XS	406 mm	Manufacturer-published
G4-X geometry	48	406 mm	Manufacturer-published
G4-X geometry	57	406 mm	Manufacturer-published

What is the wheel flop of the Colnago G4-X 2026?

Wheel flop is a calculated steering-geometry value based on trail and head tube angle. Also searched as flop.

Configuration	Size	Wheel flop	Source
G4-X geometry	52	18.6 mm	RideDNA-derived
G4-X geometry	54	18.9 mm	RideDNA-derived
G4-X geometry	XS	16.9 mm	RideDNA-derived
G4-X geometry	48	15.6 mm	RideDNA-derived
G4-X geometry	57	18.9 mm	RideDNA-derived

Geometry

Available sizes: 52, 54, XS, 48, 57.

G4-X geometry

Jump to size: XS · 48 · 52 · 54 · 57

G4-X geometry geometry by size
Size	Reach	Stack	ETT	HTA	STA	Trail	Wheelbase	Chainstay	BB drop	BB height	Front center	Fork offset	Head tube	Seat tube	Standover	Fork length	Wheel flop	Max tire
XS	371 mm	536 mm	524.7 mm^*†	71 °^‡	74 °^‡	54.8 mm^*†	1015.6 mm^*†	430 mm^‡	72 mm^*†	†	596 mm	48 mm^*†	†	450 mm^‡	†	406 mm	16.9 mm^*†	†
48	380 mm	554 mm	538.9 mm^*†	71.5 °^‡	74 °^‡	52 mm^*†	1025.6 mm^*†	430 mm^‡	72 mm^*†	†	606 mm	48 mm^*†	†	480 mm^‡	†	406 mm	15.6 mm^*†	†
52	390 mm	573 mm	559.7 mm^*†	71.5 °^‡	73.5 °^‡	61.7 mm^*†	1033.3 mm^*†	430 mm^‡	70 mm^*†	†	613 mm	48 mm^*†	†	520 mm^‡	†	406 mm	18.6 mm^*†	†
54	400 mm	591 mm	580.7 mm^*†	71.5 °^‡	73 °^‡	62.7 mm^*†	1048.4 mm^*†	430 mm^‡	70 mm^*†	†	628 mm	48 mm^*†	†	540 mm^‡	†	406 mm	18.9 mm^*†	†
57	410 mm	610 mm	596.5 mm^*†	71.5 °^‡	73 °^‡	62.9 mm^*†	1064.4 mm^*†	430 mm^‡	70 mm^*†	†	644 mm	48 mm^*†	†	570 mm^‡	†	406 mm	18.9 mm^*†	†

Length measurements are in millimeters; HTA and STA are in degrees. ETT means effective top tube. Values prioritize RideDNA calculations. * RideDNA calculated (including corrections where published values differ). Unmarked values are manufacturer-published; matching independently calculated values are identified in their source notes. † Manufacturer did not publish this dimension; † alone means no reliable value is available. ‡ Staff reference or source not confirmed; see the source note. Open Geometry Audit for the original published values, calculated geometry, and deltas.

Size-to-size changes

Differences are calculated from the recorded values; they are not fit recommendations.

G4-X geometry: XS → 48 — Reach +9 mm, Stack +18 mm, ETT +14.2 mm, HTA +0.5 °, STA +0 °, Trail -2.8 mm, Wheelbase +10 mm, Chainstay +0 mm, BB drop +0 mm, Front center +10 mm, Fork offset +0 mm, Seat tube +30 mm, Fork length +0 mm, Wheel flop -1.3 mm
G4-X geometry: 48 → 52 — Reach +10 mm, Stack +19 mm, ETT +20.8 mm, HTA +0 °, STA -0.5 °, Trail +9.7 mm, Wheelbase +7.7 mm, Chainstay +0 mm, BB drop -2 mm, Front center +7 mm, Fork offset +0 mm, Seat tube +40 mm, Fork length +0 mm, Wheel flop +3 mm
G4-X geometry: 52 → 54 — Reach +10 mm, Stack +18 mm, ETT +21 mm, HTA +0 °, STA -0.5 °, Trail +1 mm, Wheelbase +15.1 mm, Chainstay +0 mm, BB drop +0 mm, Front center +15 mm, Fork offset +0 mm, Seat tube +20 mm, Fork length +0 mm, Wheel flop +0.3 mm
G4-X geometry: 54 → 57 — Reach +10 mm, Stack +19 mm, ETT +15.8 mm, HTA +0 °, STA +0 °, Trail +0.2 mm, Wheelbase +16 mm, Chainstay +0 mm, BB drop +0 mm, Front center +16 mm, Fork offset +0 mm, Seat tube +30 mm, Fork length +0 mm, Wheel flop +0 mm

RideDNA-derived values

These deterministic calculations use the recorded inputs above. They are separate from recorded facts and are not fit recommendations.

G4-X geometry size 52 stack Reach Ratio: 1.47
G4-X geometry size 54 stack Reach Ratio: 1.48
G4-X geometry size XS stack Reach Ratio: 1.44
G4-X geometry size 48 stack Reach Ratio: 1.46
G4-X geometry size 57 stack Reach Ratio: 1.49

Bike details

competitor Model Id: 125b962b-324e-4770-a7b5-aa8e31369988

Source

Recorded source