2018 B-Twin · R
2018 B-Twin Ultra 900 CF geometry
Full frame geometry for the 2018 B-Twin Ultra 900 CF, 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) | Chainstay (mm) | Wheelbase (mm) |
|---|---|---|---|---|---|---|---|---|---|
| XS | 509 | 374 | 75 | 70.5 | 108 | 510 | 490 | 410 | 968 |
| S | 529 | 383 | 74.5 | 72 | 122 | 530 | 520 | 410 | 976 |
| M | 556 | 383 | 73.5 | 73 | 148 | 548 | 550 | 410 | 984 |
| L | 585 | 391 | 73.5 | 73 | 178 | 564 | 580 | 410 | 1001 |
| XL | 613 | 393 | 73 | 73 | 208 | 580 | 600 | 410 | 1011 |
All measurements in millimetres unless marked (°) for angles.