2026 Trek · MHB
2026 Trek Roscoe Gen 4 geometry
Full frame geometry for the 2026 Trek Roscoe Gen 4, 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) | Chainstay (mm) | Wheelbase (mm) | Fork rake (mm) | Trail (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S | 604 | 415 | 73.1 | 65 | 90 | 575 | 330 | 714 | 45 | 425 | 1139 | 37 | 125 |
| M | 644 | 440 | 73.1 | 65 | 100 | 611 | 375 | 735 | 61 | 430 | 1186 | 44 | 125 |
| ML | 648 | 455 | 74.1 | 65 | 105 | 614 | 400 | 740 | 61 | 430 | 1203 | 44 | 125 |
| L | 662 | 470 | 74.1 | 65 | 120 | 632 | 425 | 740 | 61 | 430 | 1224 | 44 | 125 |
| XL | 684 | 500 | 75.1 | 65 | 145 | 655 | 450 | 740 | 61 | 430 | 1265 | 44 | 125 |
All measurements in millimetres unless marked (°) for angles.