Geometry ?
Orro Venturi STC 2026 geometry in sizes S–XL: stack 523–580 mm, reach 378–399 mm, head angle 71.8–72.3°.
| S | M | L | XL | |
|---|---|---|---|---|
| Stack | 523 mm | 542 mm | 561 mm | 580 mm |
| Reach | 378 mm | 385 mm | 392 mm | 399 mm |
| Head angle | 71.8° | 72° | 72.3° | 72.3° |
| Seat angle | 74.5° | 74° | 73.5° | 73° |
| Seat tube (?) | 480 mm | 510 mm | 535 mm | 560 mm |
| Head tube | 123.6 mm | 142.8 mm | 163.8 mm | 183.7 mm |
| Top tube (effective) | 523.1 mm | 540.4 mm | 558.2 mm | 576.3 mm |
| BB drop | 71 mm | 71 mm | 69 mm | 69 mm |
| Chainstay | 406 mm | 406 mm | 406 mm | 406 mm |
| Wheelbase | 976.9 mm | 988.2 mm | 999.5 mm | 1012.5 mm |
| Fork offset | 48 mm | 48 mm | 48 mm | 48 mm |
(?) by the seat tube length: the manufacturer doesn’t say whether it’s measured centre to centre (c-c) or centre to top (c-t).
Source: orrobikes.com, checked 12 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 S (stack 523 / reach 378 mm).
Stack and reach within 12 mm of size M (stack 542 / reach 385 mm).
Stack and reach within 12 mm of size L (stack 561 / reach 392 mm).
Stack and reach within 12 mm of size XL (stack 580 / reach 399 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 6 values for this model’s stem and bars. Add them