Road endurance
Brother Cycles Stroma
2026 · 700c wheels · 5 sizes
Reynolds 725 steel all-season road frame with a tapered carbon disc fork, sold as a frameset. Clearance is up to 700x38 tyres, or 32 mm with full mudguards, with rack and mudguard eyelets. The geometry is unchanged from the 2020 launch table. Brother's current table prints the Small stack as 550m, which is a typo for 550 mm.
Source: www.brothercycles.com/shop/frames/stroma/
I ride:
Size run
Published geometry by size. How each size rides and fits for your rider profile loads with the page.
| Size | xSmall | Small | Medium | Large | xLarge |
|---|---|---|---|---|---|
| Stack (mm) | 532 | 550 | 563 | 585 | 604 |
| Reach (mm) | 369 | 377 | 385 | 393 | 402 |
| Head angle (°) | 71.0 | 72.0 | 72.5 | 72.5 | 72.5 |
| Seat angle (°) | 74.0 | 73.5 | 73.0 | 73.0 | 73.0 |