Geometry ?
Bisan Mithra Disc 2026 geometry in sizes 48 cm–58 cm: stack 522–593.2 mm, reach 365.3–404.3 mm, head angle 71.5–73.5°.
| 48 cm | 51 cm | 54 cm | 56 cm | 58 cm | |
|---|---|---|---|---|---|
| Stack | 522 mm | 538 mm | 551.5 mm | 572.3 mm | 593.2 mm |
| Reach | 365.3 mm | 370.8 mm | 381.9 mm | 390.5 mm | 404.3 mm |
| Head angle | 71.5° | 72° | 72.5° | 73° | 73.5° |
| Seat angle | 74.5° | 74° | 74° | 73.5° | 73.5° |
| Head tube | 120 mm | 135 mm | 150 mm | 170 mm | 190 mm |
| BB drop | 72.5 mm | 72.5 mm | 70 mm | 70 mm | 70 mm |
| Chainstay | 408 mm | 408 mm | 408 mm | 408 mm | 408 mm |
| Wheelbase | 964.6 mm | 970.8 mm | 982.8 mm | 993 mm | 1008.2 mm |
Source: en.bisan.com.tr, checked 13 Nov 2026 · bar position: worked out from published data
Stock build
I don’t have the build for each size yet.
Frames with similar geometry
Stack and reach within 12 mm of size 48 cm (stack 522 / reach 365.3 mm).
Stack and reach within 12 mm of size 51 cm (stack 538 / reach 370.8 mm).
Stack and reach within 12 mm of size 54 cm (stack 551.5 / reach 381.9 mm).
Stack and reach within 12 mm of size 56 cm (stack 572.3 / reach 390.5 mm).
Stack and reach within 12 mm of size 58 cm (stack 593.2 / reach 404.3 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 7 values for this model’s stem and bars. Add them