Opus Fortitude (alloy) geometry
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Size M
Render
Align
Geometry
| Size | XXS | XS | S | M | L | XL |
|---|---|---|---|---|---|---|
| Stack mm | 522 | 540 | 560 | 580 | 600 | 620 |
| Reach mm | 362 | 370 | 378 | 387 | 396 | 405 |
| Head tube angle ° | 70.5 | 71.25 | 72.0 | 72.5 | 72.5 | 73.0 |
| Seat tube angle ° | 74.5 | 74.0 | 73.5 | 73.0 | 72.5 | 72.0 |
| Head tube length mm | 100 | 120 | 138 | 157 | 178 | 199 |
| Seat tube mm | 440 | 480 | 520 | 540 | 560 | 580 |
| Chainstay mm | 416 | 416 | 419 | 419 | 422 | 422 |
| BB drop mm | 79 | 76 | 76 | 76 | 76 | 74 |
| Stack to reach | 1.44 | 1.46 | 1.48 | 1.50 | 1.52 | 1.53 |
| Effective top tube mmi | 507 | 525 | 544 | 564 | 585 | 606 |
SizeMkey specs
Stack-to-reach (size M)1.50More relaxed (taller and shorter) than 73% of road frames in the database at comparable sizes.
Closest geometry matches (size M)
Matched by stack, reach and head tube angle.
More from Opus
Nearest size to the Fortitude M.