2026 Trek · RD
2026 Trek Madone SL 6 Gen 8 geometry
Full frame geometry for the 2026 Trek Madone SL 6 Gen 8, 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 | 507 | 370 | 73.8 | 71.6 | 100 | 517 | 404 | 709 | 72 | 410 | 971 | 50 | 60 |
| S | 530 | 378 | 73.8 | 72.2 | 121 | 532 | 440 | 740 | 72 | 410 | 976 | 45 | 62 |
| M | 546 | 384 | 73.6 | 72.9 | 136 | 545 | 476 | 768 | 70 | 410 | 981 | 45 | 57 |
| M/L | 562 | 389 | 73.4 | 73.5 | 150 | 557 | 512 | 794 | 70 | 410 | 980 | 40 | 59 |
| L | 582 | 394 | 73.4 | 73.8 | 172 | 568 | 548 | 825 | 68 | 411 | 990 | 40 | 57 |
| XL | 610 | 402 | 73.4 | 73.9 | 201 | 584 | 609 | 869 | 68 | 412 | 1007 | 40 | 56 |
All measurements in millimetres unless marked (°) for angles.