Brilliant Bicycle Co. Cooper geometry
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auto
Size Small
Render
Align
Geometry
| Size | Small | Medium | Large |
|---|---|---|---|
| Stack mm | 593 | 598 | 611 |
| Reach mm | 392 | 411 | 421 |
| Head tube angle ° | 70.0 | 70.0 | 70.0 |
| Seat tube angle ° | 72.0 | 72.0 | 72.0 |
| Head tube length mm | 155 | 160 | 175 |
| Seat tube mm | 440 | 482 | 560 |
| Chainstay mm | 444 | 444 | 444 |
| Stack to reach | 1.51 | 1.45 | 1.45 |
| Effective top tube mmi | 585 | 605 | 620 |
SizeSmallkey specs
Stack-to-reach (size Small)1.51More relaxed (taller and shorter) than 59% of flat-bar frames in the database at comparable sizes.
Closest geometry matches (size Small)
Matched by stack, reach and head tube angle.
Breezer Inversion Cafe2025–26L (56cm) · 593.7 / 394.1Specialized Ariel Step-Through2020S · 594 / 390Specialized CrossTrailA1 alloy, 2019S · 594 / 390Specialized Ariel Elite Carbon2018S · 592 / 390Specialized CrossTrail Elite Carbon2018S · 592 / 390Specialized Arielwomen's hybrid, 2017–20S · 594 / 390