Colnago V4Rs geometryRoad · 2026 · 7 sizes, from 420 to 570
The Colnago V4Rs is a road bike available in 7 sizes, from 420 to 570. Stack ranges from 510 to 612 mm and reach from 370 to 410 mm. All sizes share 408 mm chainstays.
What size V4Rs do I need?
Enter the stack and reach of a bike that fits you well and we will tell you which size is closest and how to set it up.
Enter your stack and reach to see which size fits you best.
Geometry chart by size
Measurements in mm and degrees, as published by Colnago. The ones that matter most for choosing a size are in bold.
| Size | 420 | 455 | 485 | 510 | 530 | 550 | 570 |
|---|---|---|---|---|---|---|---|
| Stack | 510 | 522 | 539 | — | 575 | 593 | 612 |
| Reach | 370 | 375 | 383 | 388 | 395 | 403 | 410 |
| Effective top tube | 504 | 517 | 535 | — | 567 | 586 | 599 |
| Head tube length | 103 | 114 | 130 | 148 | 164 | 181 | 200 |
| Head angle | 70.6° | 71.0° | 71.5° | 71.8° | 72.5° | 72.9° | 73.1° |
| Chainstay length | 408 | 408 | 408 | 408 | 408 | 408 | 408 |
| Front centre | 576 | 582 | 591 | 597 | 599 | 608 | 619 |
| BB drop | 72 | 72 | 72 | 72 | 72 | 72 | 72 |
| Fork length | 379 | 379 | 379 | 379 | 379 | 379 | 379 |
| Seat angle (method not stated) | 75.5° | 75.0° | 74.5° | 74.0° | 73.5° | 73.0° | 73.0° |
Source: Colnago official website · data from 11 Nov 2026. Spot a mistake?
Stack and reach of every size
Higher means a taller front end; further right means a longer reach. The blue dot is your search.
Character of each size
Compared with other road bikes. Further right means more of that quality.
Frequently asked questions
What size V4Rs do I need?
It depends on your position, not just your height. The most reliable way is to compare the stack and reach of a bike that fits you with those of each size (from 510/370 mm in size 420 to 612/410 mm in size 570). The size finder on this page shows the closest size and the stem and spacers you would need.