2026 Giant · USD
2026 Giant Roam 4 geometry
Full frame geometry for the 2026 Giant Roam 4, size by size — stack, reach, angles and tube lengths.
Does this bike fit you?
Get sized in minutes — no tape measure, no appointment.
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) | Trail (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S | 606 | 404 | 73 | 70.5 | 115 | 590 | 420 | 725 | 62 | 450 | 1088 | 42 | 85 |
| M | 620 | 410 | 73 | 70.5 | 130 | 600 | 460 | 756 | 62 | 450 | 1098 | 42 | 85 |
| L | 634 | 416 | 73 | 70.5 | 145 | 610 | 500 | 788 | 62 | 450 | 1109 | 42 | 85 |
| XL | 648 | 427 | 73 | 70.5 | 160 | 625 | 550 | 827 | 62 | 450 | 1125 | 42 | 85 |
All measurements in millimetres unless marked (°) for angles.