Bianchi Impulso Pro 2025 geometry

Size chart for fitting. If this bike already feels right, find others with a similar riding position (size 47). Category: gravel.

Size	Stack	Reach	Head tube angle	Seat tube angle	Chainstay	Wheelbase	BB drop
47	535 mm	370 mm	70.0°	74.5°	425 mm	1010 mm	75 mm
50	550 mm	376 mm	70.5°	74.0°	425 mm	1020 mm	75 mm
53	568 mm	382 mm	71.0°	73.5°	425 mm	1030 mm	75 mm
55	584 mm	388 mm	71.5°	73.2°	425 mm	1040 mm	73 mm
57	603 mm	394 mm	72.0°	73.0°	425 mm	1052 mm	73 mm
59	622 mm	400 mm	72.0°	72.8°	425 mm	1064 mm	71 mm
61	641 mm	406 mm	72.5°	72.5°	425 mm	1076 mm	71 mm

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Size guidance

Stack and reach describe the frame's cockpit envelope better than traditional seat-tube sizing. If you know your preferred stack/reach from a bike that already fits, search within a few millimeters first, then check head angle and chainstay for handling feel. See the glossary for stack, reach, and HTA.