2026 Trek · RDS
2026 Trek Madone SLR Gen 8 geometry
Full frame geometry for the 2026 Trek Madone SLR Gen 8, size by size — stack, reach, angles and tube lengths.
Does this bike fit you?
Get sized in minutes — no tape measure, no appointment.
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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| XS | 507 | 370 | 73.8 | 71.6 | 100 | 517 | 404 | 704 | 72 | 572 | 410 | 971 | 50 | 61 |
| S | 530 | 378 | 73.8 | 72.2 | 121 | 532 | 440 | 734 | 72 | 577 | 410 | 976 | 45 | 62 |
| M | 546 | 384 | 73.6 | 72.9 | 136 | 545 | 476 | 762 | 70 | 582 | 410 | 981 | 45 | 58 |
| ML | 562 | 389 | 73.4 | 73.5 | 150 | 557 | 512 | 790 | 70 | 581 | 410 | 980 | 40 | 59 |
| L | 582 | 394 | 73.4 | 73.8 | 172 | 568 | 548 | 820 | 68 | 589 | 411 | 990 | 40 | 57 |
| XL | 610 | 402 | 73.4 | 73.9 | 201 | 584 | 609 | 863 | 68 | 604 | 412 | 1007 | 40 | 57 |
All measurements in millimetres unless marked (°) for angles.