2026 Colnago · G
2026 Colnago G4-X geometry
Full frame geometry for the 2026 Colnago G4-X, size by size — stack, reach, angles and tube lengths.
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Geometry by size
| Size | Stack (mm) | Reach (mm) | Seat angle (°) | Head angle (°) | Top tube (mm) | BB drop (mm) | Front centre (mm) | Chainstay (mm) |
|---|---|---|---|---|---|---|---|---|
| 450 | 535 | 371 | 74 | 71 | 524 | 72 | 585 | 430 |
| 480 | 554 | 380 | 74 | 71.5 | 539 | 72 | 596 | 430 |
| 520 | 573 | 390 | 73.5 | 71.5 | 560 | 70 | 613 | 430 |
| 540 | 591 | 400 | 73 | 71.5 | 581 | 70 | 628 | 430 |
| 570 | 600 | 410 | 73 | 71.5 | 596 | 70 | 644 | 430 |
All measurements in millimetres unless marked (°) for angles.