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Models · Bisan

Bisan Reactive (2026)

gravel · carbon · sizes 49 cm–54 cm Manufacturer’s website

Geometry ?

Bisan Reactive 2026 geometry in sizes 49 cm–54 cm: stack 552.4–594.3 mm, reach 372.4–386.3 mm, head angle 70.5–71.5°.

49 cm51.5 cm54 cm
Stack552.4 mm571.4 mm594.3 mm
Reach372.4 mm377.4 mm386.3 mm
Head angle70.5°70.5°71.5°
Seat angle73.5°73°73°
Head tube130 mm150 mm170 mm
BB drop70 mm70 mm70 mm
Chainstay430 mm430 mm430 mm
Wheelbase1016 mm1027.3 mm1033.5 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 51.5 cm (stack 571.4 / reach 377.4 mm).

Kellys SOOT (alloy: X70 / X50 / X30) (2026)size M · stack 571 / reach 378 mmBearclaw Beaux Jaxon UDH (2026)size 52 · stack 572 / reach 378 mmCarbonda CFR-505 SL (2026)size M · stack 571 / reach 378 mmKross Esker GEN2 (alloy Superlite: G100 / G200 / 1.0) (2027)size S · stack 572 / reach 376 mmKross Esker GEN2 (Performance aluminium: 2.0 / 5.0 / 6.0 / 2.1 / 6.1 / TR / ULT.RA) (2026)size S · stack 572 / reach 376 mmSeven G-753 (Endurance Fit) (2026)size 51 · stack 570 / reach 378 mm

Spotted a mistake or a missing build? Let me know.

Are you the manufacturer, or do you sell this bike? I’m missing 5 values for this model’s stem and bars. Add them