2025 Chapter2 · G
2025 Chapter2 AO geometry
Full frame geometry for the 2025 Chapter2 AO, 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) | Front centre (mm) | Chainstay (mm) | Wheelbase (mm) | Fork rake (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| XS | 521 | 355 | 73.5 | 69 | 105 | 509 | 460 | 747 | 74 | 589 | 420 | 998 | 55 |
| S | 548 | 366 | 73.5 | 70 | 130 | 528 | 480 | 771 | 74 | 601 | 420 | 1010 | 55 |
| M | 576 | 377 | 73.5 | 71 | 155 | 547 | 500 | 797 | 74 | 612 | 420 | 1021 | 55 |
| L | 605 | 388 | 73.5 | 72 | 179 | 567 | 530 | 827 | 74 | 617 | 420 | 1026 | 50 |
| XL | 634 | 399 | 73.5 | 72 | 209 | 587 | 560 | 856 | 74 | 638 | 420 | 1046 | 50 |
All measurements in millimetres unless marked (°) for angles.