2018 Trek · MDB
2018 Trek Session Alloy MKII geometry
Full frame geometry for the 2018 Trek Session Alloy MKII, 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) | Front centre (mm) | Chainstay (mm) | Wheelbase (mm) | Fork rake (mm) | Trail (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L-High | 603 | 432 | 57.6 | 64.2 | 115 | 614 | 456 | 790 | 9 | 786 | 443 | 1229 | 52 | 114 |
| M-High | 603 | 408 | 57.6 | 64.2 | 115 | 590 | 426 | 793 | 9 | 762 | 443 | 1205 | 52 | 114 |
| S-High | 603 | 389 | 57.6 | 64.2 | 115 | 570 | 426 | 810 | 9 | 742 | 443 | 1185 | 52 | 114 |
| XL-High | 603 | 456 | 57.6 | 64.2 | 115 | 638 | 456 | 775 | 9 | 810 | 443 | 1253 | 52 | 114 |
| L-Low | 607 | 426 | 57 | 63.6 | 115 | 618 | 456 | 784 | 1 | 782 | 445 | 1227 | 52 | 118 |
| M-Low | 607 | 402 | 57 | 63.6 | 115 | 594 | 426 | 790 | 1 | 758 | 445 | 1203 | 52 | 118 |
| S-Low | 607 | 382 | 57 | 63.6 | 115 | 574 | 426 | 804 | 1 | 738 | 445 | 1183 | 52 | 118 |
| XL-Low | 607 | 450 | 57 | 63.6 | 115 | 642 | 456 | 767 | 1 | 806 | 445 | 1251 | 52 | 118 |
All measurements in millimetres unless marked (°) for angles.