Bikes / Brother Cycles / Big Bro
Brother Cycles Big Bro 2026 Geometry, Reviews, and Specs
No OEM studio shot for this model yet.
Fit and steering
Aggressive fitSlow steeringFast steeringRelaxed fit Brother Cycles Big Bro 2026 Sizing Guide
Brother Cycles Big Bro 2026 Geometry Chart
| Size | Stack | Reach | Stack/reach | Stem | Bar | Crank | Head tube angle | Seat tube angle | Chainstay | Wheelbase | BB drop | Wheel size |
|---|
| 50 | 564 mm | 364 mm | 1.55:1 | 80 mm | 380 mm | 165 mm | 71.0° | 73.0° | 450 mm | 1058 mm | 75 mm | 700c |
| 54 | 584 mm | 374 mm | 1.56:1 | 100 mm | 420 mm | 172.5 mm | 71.5° | 73.0° | 450 mm | 1072 mm | 75 mm | 700c |
| 58 | 604 mm | 382 mm | 1.58:1 | 110 mm | 440 mm | 175 mm | 72.0° | 72.5° | 452 mm | 1086 mm | 73 mm | 700c |
| 62 | 624 mm | 390 mm | 1.60:1 | 110 mm | 440 mm | 175 mm | 72.0° | 72.5° | 452 mm | 1100 mm | 73 mm | 700c |
2026 colorways
No colorway catalog for 2026 yet.
What changed in the bike frame
Same published geometry as 2025.
- Published geometry matches the 2025 Brother Cycles Big Bro. Same sizes, same stack and reach.
What changed in equipment
No verified spec sheet for 2026 or 2025.
- Brother Cycles utilized a suspension-corrected geometry for the Big Bro. It can be built rigid or with a 120 mm suspension fork. Other steel ...
What changed in price
No launch MSRP in the catalog yet.
Compare 2026 and 2025 Brother Cycles Big Bro side by side
