Geometry ?
Koga Colmaro Allroad 2026 geometry in sizes XS–XL: stack 546–620 mm, reach 384–407 mm, head angle 70–72°.
| XS | S | M | L | XL | |
|---|---|---|---|---|---|
| Stack | 546 mm | 559 mm | 580 mm | 599 mm | 620 mm |
| Reach | 384 mm | 388 mm | 391 mm | 400 mm | 407 mm |
| Head angle | 70° | 71° | 71.5° | 71.5° | 72° |
| Seat angle | 73.5° | 73.5° | 73.5° | 73.5° | 73.5° |
| Seat tube (?) | 470 mm | 490 mm | 520 mm | 550 mm | 580 mm |
| Head tube | 120 mm | 130 mm | 150 mm | 170 mm | 190 mm |
| BB drop | 75 mm | 75 mm | 75 mm | 75 mm | 75 mm |
| Chainstay | 435 mm | 435 mm | 435 mm | 435 mm | 435 mm |
| Wheelbase | 1039 mm | 1038 mm | 1043 mm | 1059 mm | 1067 mm |
| Fork offset | 45 mm | 45 mm | 45 mm | 45 mm | 45 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: koga.com, 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 XS (stack 546 / reach 384 mm).
Stack and reach within 12 mm of size S (stack 559 / reach 388 mm).
Stack and reach within 12 mm of size M (stack 580 / reach 391 mm).
Stack and reach within 12 mm of size L (stack 599 / reach 400 mm).
Stack and reach within 12 mm of size XL (stack 620 / reach 407 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