2025 Colnago · G
2025 Colnago G4-X geometry
Full frame geometry for the 2025 Colnago G4-X, size by size — stack, reach, angles and tube lengths.
Does this bike fit you?
Get sized in minutes — no tape measure, no appointment.
Geometry by size
| Size | Stack (mm) | Reach (mm) | Seat angle (°) | Head angle (°) | BB drop (mm) | Front centre (mm) | Chainstay (mm) |
|---|---|---|---|---|---|---|---|
| 450 | 535 | 371 | 74 | 71 | 72 | 585 | 430 |
| 480 | 552 | 378 | 73.5 | 71.5 | 72 | 590 | 430 |
| 520 | 573 | 385 | 73 | 72 | 72 | 598 | 430 |
| 540 | 590 | 390 | 72.5 | 72.3 | 72 | 605 | 430 |
| 570 | 612 | 398 | 72 | 72.5 | 72 | 615 | 430 |
All measurements in millimetres unless marked (°) for angles.