2025 3T · EG
2025 3T Ultra Boost geometry
Full frame geometry for the 2025 3T Ultra Boost, 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 (°) | Head tube (mm) | Top tube (mm) | BB drop (mm) | Front centre (mm) | Chainstay (mm) |
|---|---|---|---|---|---|---|---|---|---|
| 48 | 520 | 351 | 74 | 68.5 | 122 | 510 | 79 | 597 | 419 |
| 51 | 542 | 362 | 74 | 69.5 | 142 | 527 | 79 | 606 | 419 |
| 54 | 564 | 373 | 74 | 71 | 158 | 545 | 77 | 602 | 419 |
| 56 | 584 | 381 | 74 | 72 | 175 | 559 | 77 | 607 | 419 |
| 58 | 604 | 388 | 74 | 72.5 | 196 | 574 | 75 | 616 | 419 |
| 61 | 632 | 399 | 74 | 72.5 | 225 | 593 | 75 | 636 | 419 |
All measurements in millimetres unless marked (°) for angles.