2025 Marin · MDB
2025 Marin Alpine Trail geometry
Full frame geometry for the 2025 Marin Alpine Trail, 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) | Seat tube (mm) | Standover (mm) | BB drop (mm) | Chainstay (mm) | Wheelbase (mm) | Fork rake (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S | 620 | 430 | 79 | 63.5 | 100 | 556 | 400 | 683 | 7 | 435 | 1211 | 44 |
| M | 634 | 460 | 79 | 63.5 | 115 | 592 | 420 | 690 | 7 | 435 | 1248 | 44 |
| L | 643 | 490 | 79 | 63.5 | 125 | 626 | 430 | 695 | 7 | 435 | 1283 | 44 |
| XL | 647 | 520 | 79 | 63.5 | 130 | 659 | 460 | 698 | 7 | 435 | 1318 | 44 |
All measurements in millimetres unless marked (°) for angles.