2026 Marin · Jump
2026 Marin Alcatraz 2 geometry
Full frame geometry for the 2026 Marin Alcatraz 2, 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Short | 575 | 385 | 69 | 69 | 115 | 600 | 320 | 370 | 22 | 395 | 1037 | 42 |
| Long | 580 | 430 | 69 | 69 | 120 | 646 | 320 | 400 | 22 | 395 | 1083 | 42 |
All measurements in millimetres unless marked (°) for angles.