Opus Fortitude FB (flat bar) geometry
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auto
Size S
Render
Align
Geometry
| Size | XS | S | M | L |
|---|---|---|---|---|
| Stack mm | 539 | 562 | 581 | 598 |
| Reach mm | 380 | 389 | 398 | 407 |
| Head tube angle ° | 71.0 | 71.5 | 72.0 | 72.0 |
| Seat tube angle ° | 74.5 | 74.0 | 73.5 | 73.0 |
| Head tube length mm | 100 | 125 | 145 | 165 |
| Seat tube mm | 420 | 460 | 500 | 540 |
| Chainstay mm | 430 | 435 | 435 | 435 |
| BB drop mm | 80 | 78 | 76 | 74 |
| Stack to reach | 1.42 | 1.44 | 1.46 | 1.47 |
| Effective top tube mmi | 529 | 550 | 570 | 590 |
SizeSkey specs
Stack-to-reach (size S)1.44More aggressive (lower and longer) than 68% of flat-bar frames in the database at comparable sizes.
Closest geometry matches (size S)
Matched by stack, reach and head tube angle.