2026 Curve · RD
2026 Curve AIR Belgie geometry
Full frame geometry for the 2026 Curve AIR Belgie, 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 48 | 516 | 366 | 74 | 71.5 | 110 | 514 | 485 | 732 | 75 | 563 | 410 | 962 | 45 |
| 50 | 522 | 374 | 74 | 72 | 115 | 524 | 505 | 745 | 75 | 569 | 410 | 968 | 45 |
| 52 | 528 | 378 | 73.5 | 72.5 | 120 | 534 | 525 | 757 | 75 | 571 | 410 | 969 | 45 |
| 53 | 535 | 386 | 73.5 | 72.5 | 130 | 544 | 535 | 768 | 72 | 581 | 410 | 981 | 45 |
| 54 | 545 | 393 | 73.5 | 72.5 | 140 | 554 | 545 | 777 | 72 | 592 | 412 | 993 | 45 |
| 55 | 554 | 400 | 73.5 | 72.5 | 150 | 564 | 555 | 787 | 72 | 602 | 412 | 1003 | 45 |
| 56 | 564 | 408 | 73.5 | 72.5 | 160 | 574 | 570 | 799 | 72 | 612 | 412 | 1013 | 45 |
| 58 | 592 | 414 | 73 | 73 | 190 | 595 | 590 | 824 | 70 | 623 | 415 | 1028 | 45 |
| 61 | 630 | 422 | 73 | 73 | 230 | 615 | 625 | 860 | 70 | 642 | 415 | 1048 | 45 |
All measurements in millimetres unless marked (°) for angles.