2025 Transition · MDB
2025 Transition Sentinel geometry
Full frame geometry for the 2025 Transition Sentinel, 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) | Seat tube (mm) | BB drop (mm) | Chainstay (mm) | Wheelbase (mm) |
|---|---|---|---|---|---|---|---|---|---|
| XS | 592 | 415 | 79.8 | 64 | 100 | 360 | 15 | 436 | 1173 |
| SM-29 | 615 | 430 | 79.3 | 64 | 100 | 360 | 25 | 442 | 1208 |
| SM-MX | 618 | 426 | 78.9 | 63.6 | 100 | 360 | 11 | 440 | — |
| MD-29 | 621 | 455 | 78.7 | 64 | 110 | 390 | 25 | 442 | 1237 |
| MD-MX | 624 | 451 | 78.3 | 63.6 | 110 | 390 | 11 | 440 | — |
| LG-29 | 633 | 480 | 78.3 | 64 | 120 | 430 | 25 | 448 | 1273 |
| LG-MX | 636 | 476 | 77.9 | 63.6 | 120 | 430 | 11 | 446 | — |
| XL-29 | 642 | 505 | 77.9 | 64 | 130 | 460 | 25 | 448 | 1302 |
| XL-MX | 646 | 501 | 77.5 | 63.6 | 130 | 460 | 11 | 446 | — |
| XXL-29 | 651 | 530 | 77.6 | 64 | 140 | 490 | 25 | 448 | 1332 |
| XXL-MX | 655 | 526 | 77.2 | 63.6 | 140 | 490 | 11 | 446 | — |
All measurements in millimetres unless marked (°) for angles.