2026 Trek · GD
2026 Trek CheckOUT SL geometry
Full frame geometry for the 2026 Trek CheckOUT SL, 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 | 580 | 395 | 74.6 | 68.8 | 83 | 564 | 440 | 772 | 70 | 442 | 1081 | 48 | 92 |
| M | 617 | 407 | 74.2 | 69 | 122 | 589 | 470 | 804 | 70 | 442 | 1105 | 48 | 91 |
| ML | 634 | 417 | 73.7 | 69.4 | 138 | 597 | 520 | 838 | 70 | 442 | 1117 | 48 | 88 |
| L | 652 | 427 | 73 | 69.5 | 159 | 613 | 540 | 846 | 68 | 442 | 1135 | 48 | 88 |
| XL | 673 | 435 | 72.6 | 69.4 | 182 | 628 | 560 | 852 | 68 | 442 | 1150 | 48 | 88 |
All measurements in millimetres unless marked (°) for angles.