Orro Venturi STC

Road · 4 sizes

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Bike: Orro Venturi STC · Road · 4 sizes
Geometry: orrobikes.com, fetched 22 Oct 2026, read off the maker's chart, re-checked, 1 corrected
Seat angle convention: Calculated from Orro's table
Cockpit: Generic stem and bar, assumed
Solved with: cover 10 mm (assumed), max spacers 40 mm (assumed), stem clamp centre 20 mm (assumed), so every verdict carries ±10 mm at the bar
Sheet: 22 October 2026 · 879 bikes, 79 makes, 4,979 sizes in the catalogue

Geometry, every size, from the maker's table

The tinted row is the size drawn beside it. Press a size to draw it.

Size	Stack (mm)	Reach (mm)	Head angle (deg)	Seat angle (deg)	Head tube (mm)	Chainstay (mm)	Wheelbase (mm)
S	523	378	71.8	74.5	123.6	406	976.9
M	542	385	72	74	142.8	406	988.2
L	561	392	72.3	73.5	163.8	406	999.5
XL	580	399	72.3	73	183.7	406	1012.5

The table runs on to the right: 6 more columns after Reach. Scroll it sideways to read them.

The L drawn to scale from the table, with no build on it. Stack and reach run from the bottom bracket to the top of the head tube; every size is solved from those two. One square is 100 mm.

The maker's cockpit

No stock cockpit I can name, so every size is solved on a generic stem and bar unless you choose one on the sheet.

Generic stem and barAssumedNo bar is listed for this frame.

Frame facts

read off the maker's page: orrobikes.com

Tyre clearance: not published
Bottom bracket: BB86
Axles and brakes: not published
UDH: not published
Seatpost: not published
Frame weight: not published

In the maker's words

Kept whole, as I read it off orrobikes.com.

FSA ACR integrated bar and stem on the Ultegra build; the chart prints no stem or bar sizes, so stock fields are null.

Cockpit and seatpost, in the maker's words · 23 words

FSA ACR integrated bar and stem on the Ultegra build; the chart prints no stem or bar sizes, so stock fields are null.

OFFICIAL SOURCE: Orro Bikes' own site (orrobikes.com), product page "Orro Venturi STC Carbon Road Bike with Shimano Ultegra 8000" (frame and fork ORRO Venturi STC, BB86, FSA ACR integrated bar and stem), reached from the Bike Insights citation /shop/2021-venturi-ultegra, which now redirects there. Source: image_table (official Orro product page "Orro Venturi STC Carbon Road Bike with Shimano Ultegra 8000", the size chart image "Venturi-Size-Chart.jpg" read at full resolution; fetched 2026-10-22

How I read the maker's table

Four sizes S to XL. Not printed: standover, front centre, trail, stem and bar (null); stack datum not stated (null). MAKER SLIP, FLAGGED: the desktop chart prints the M head angle as "272"; the same page's mobile chart (Venturi-Mobile-Geo-Chart-xs.jpg) prints 72, which is recorded here; Bike Insights holds 72.2. Model year: the listing on the fetch date (model_year null); Bike Insights files the same table as its Venturi 2020 and 2021 STC. Source: image_table (official Orro product page "Orro Venturi STC Carbon Road Bike with Shimano Ultegra 8000", the size chart image "Venturi-Size-Chart.jpg" read at full resolution; fetched 2026-10-22, HTTP 200)