2026 Trek · UD
2026 Trek FX Sport AL geometry
Full frame geometry for the 2026 Trek FX Sport AL, 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| XS | 543 | 383 | 75 | 70 | 115 | 528 | 356 | 708 | 65 | 442 | 1047 | 50 | 74 |
| S | 568 | 385 | 74.5 | 70.5 | 140 | 543 | 406 | 751 | 65 | 442 | 1054 | 50 | 71 |
| M | 594 | 393 | 74 | 71 | 165 | 563 | 457 | 787 | 65 | 442 | 1065 | 50 | 68 |
| L | 620 | 400 | 73.5 | 71.5 | 190 | 583 | 508 | 812 | 65 | 442 | 1075 | 50 | 64 |
| XL | 648 | 410 | 72.5 | 72.5 | 215 | 613 | 559 | 848 | 65 | 442 | 1082 | 50 | 58 |
All measurements in millimetres unless marked (°) for angles.