bike geometry
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 G4-X?
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 | 54 | 400 mm | RideDNA-derived |
| G4-X geometry | XS | 371 mm | RideDNA-derived |
| G4-X geometry | 57 | 410 mm | RideDNA-derived |
| G4-X geometry | 48 | 380 mm | RideDNA-derived |
| G4-X geometry | 52 | 390 mm | RideDNA-derived |
What is the stack of the G4-X?
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 | 54 | 591 mm | RideDNA-derived |
| G4-X geometry | XS | 536 mm | RideDNA-derived |
| G4-X geometry | 57 | 610 mm | RideDNA-derived |
| G4-X geometry | 48 | 554 mm | RideDNA-derived |
| G4-X geometry | 52 | 573 mm | RideDNA-derived |
What is the head tube angle of the G4-X?
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 | 54 | 71.5 ° | RideDNA-derived |
| G4-X geometry | XS | 71 ° | RideDNA-derived |
| G4-X geometry | 57 | 71.5 ° | RideDNA-derived |
| G4-X geometry | 48 | 71.5 ° | RideDNA-derived |
| G4-X geometry | 52 | 71.5 ° | RideDNA-derived |
What is the seat tube angle of the G4-X?
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 | 54 | 73 ° | RideDNA-derived |
| G4-X geometry | XS | 74 ° | RideDNA-derived |
| G4-X geometry | 57 | 73 ° | RideDNA-derived |
| G4-X geometry | 48 | 74 ° | RideDNA-derived |
| G4-X geometry | 52 | 73.5 ° | RideDNA-derived |
What is the wheelbase of the G4-X?
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 | 54 | 1048.4 mm | RideDNA-derived |
| G4-X geometry | XS | 1015.6 mm | RideDNA-derived |
| G4-X geometry | 57 | 1064.4 mm | RideDNA-derived |
| G4-X geometry | 48 | 1025.6 mm | RideDNA-derived |
| G4-X geometry | 52 | 1033.3 mm | RideDNA-derived |
What is the chainstay length of the G4-X?
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 | 54 | 424.3 mm | RideDNA-derived |
| G4-X geometry | XS | 423.9 mm | RideDNA-derived |
| G4-X geometry | 57 | 424.3 mm | RideDNA-derived |
| G4-X geometry | 48 | 423.9 mm | RideDNA-derived |
| G4-X geometry | 52 | 424.3 mm | RideDNA-derived |
What is the front center of the G4-X?
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 | 54 | 628 mm | RideDNA-derived |
| G4-X geometry | XS | 596 mm | RideDNA-derived |
| G4-X geometry | 57 | 644 mm | RideDNA-derived |
| G4-X geometry | 48 | 606 mm | RideDNA-derived |
| G4-X geometry | 52 | 613 mm | RideDNA-derived |
What is the fork offset of the G4-X?
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 | 54 | 48 mm | RideDNA-derived |
| G4-X geometry | XS | 48 mm | RideDNA-derived |
| G4-X geometry | 57 | 48 mm | RideDNA-derived |
| G4-X geometry | 48 | 48 mm | RideDNA-derived |
| G4-X geometry | 52 | 48 mm | RideDNA-derived |
What is the seat tube length of the G4-X?
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 | 54 | 540 mm | RideDNA-derived |
| G4-X geometry | XS | 450 mm | RideDNA-derived |
| G4-X geometry | 57 | 570 mm | RideDNA-derived |
| G4-X geometry | 48 | 480 mm | RideDNA-derived |
| G4-X geometry | 52 | 520 mm | RideDNA-derived |
What is the fork length of the G4-X?
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 | 54 | 406 mm | RideDNA-derived |
| G4-X geometry | XS | 406 mm | RideDNA-derived |
| G4-X geometry | 57 | 406 mm | RideDNA-derived |
| G4-X geometry | 48 | 406 mm | RideDNA-derived |
| G4-X geometry | 52 | 406 mm | RideDNA-derived |
What is the wheel flop of the G4-X?
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 | 54 | 18.9 mm | RideDNA-derived |
| G4-X geometry | XS | 16.9 mm | RideDNA-derived |
| G4-X geometry | 57 | 18.9 mm | RideDNA-derived |
| G4-X geometry | 48 | 15.6 mm | RideDNA-derived |
| G4-X geometry | 52 | 18.6 mm | RideDNA-derived |
Geometry
Available sizes: 54, XS, 57, 48, 52.
G4-X geometry
Jump to size: XS · 48 · 52 · 54 · 57
| 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 | — | 71 ° | 74 ° | — | 1015.6 mm | 423.9 mm | — | — | 596 mm | 48 mm | — | 450 mm | — | 406 mm | 16.9 mm | — |
| 48 | 380 mm | 554 mm | — | 71.5 ° | 74 ° | — | 1025.6 mm | 423.9 mm | — | — | 606 mm | 48 mm | — | 480 mm | — | 406 mm | 15.6 mm | — |
| 52 | 390 mm | 573 mm | — | 71.5 ° | 73.5 ° | — | 1033.3 mm | 424.3 mm | — | — | 613 mm | 48 mm | — | 520 mm | — | 406 mm | 18.6 mm | — |
| 54 | 400 mm | 591 mm | — | 71.5 ° | 73 ° | — | 1048.4 mm | 424.3 mm | — | — | 628 mm | 48 mm | — | 540 mm | — | 406 mm | 18.9 mm | — |
| 57 | 410 mm | 610 mm | — | 71.5 ° | 73 ° | — | 1064.4 mm | 424.3 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.
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, HTA +0.5 °, STA +0 °, Wheelbase +10 mm, Chainstay +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, HTA +0 °, STA -0.5 °, Wheelbase +7.7 mm, Chainstay +0.4 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, HTA +0 °, STA -0.5 °, Wheelbase +15.1 mm, Chainstay +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, HTA +0 °, STA +0 °, Wheelbase +16 mm, Chainstay +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 manufacturer inputs above. They are separate from manufacturer facts and are not fit recommendations.
- G4-X geometry size 54 stack Reach Ratio: 1.48
- G4-X geometry size XS stack Reach Ratio: 1.44
- G4-X geometry size 57 stack Reach Ratio: 1.49
- G4-X geometry size 48 stack Reach Ratio: 1.46
- G4-X geometry size 52 stack Reach Ratio: 1.47
Bike details
- competitor Model Id
- 125b962b-324e-4770-a7b5-aa8e31369988