2025 Rocky Mountain · MDB
2025 Rocky Mountain Instinct Alloy geometry
Full frame geometry for the 2025 Rocky Mountain Instinct Alloy, 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SM | 572 | 430 | 77 | 64 | 100 | 572 | 365 | 763 | 36 | 445 | 1198 | 44 |
| MD | 599 | 455 | 77 | 64 | 110 | 622 | 410 | 794 | 36 | 445 | 1227 | 44 |
| LG | 627 | 480 | 77 | 64 | 125 | 636 | 440 | 799 | 36 | 445 | 1258 | 44 |
| XL | 659 | 510 | 77 | 64 | 135 | 645 | 470 | 796 | 36 | 445 | 1293 | 44 |
All measurements in millimetres unless marked (°) for angles.