Ridley Noah 3.0 geometryRoad · 2027 · 4 sizes, from XS to L
The Ridley Noah 3.0 is a road bike available in 4 sizes, from XS to L. Stack ranges from 532 to 594 mm and reach from 392 to 420 mm. Its geometry is low and long, with a racing fit. All sizes share 407 mm chainstays. Data from 2027; geometry from 2026, 2025 is also available.
What size Noah 3.0 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 Ridley. The ones that matter most for choosing a size are in bold.
| Size | XS | S | M | L |
|---|---|---|---|---|
| Stack | 532 | 549 | 570 | 594 |
| Reach | 392 | 403 | 412 | 420 |
| Effective top tube | 525 | 545 | 565 | 585 |
| Head tube length | 130 | 145 | 165 | 190 |
| Head angle | 72.0° | 73.0° | 73.5° | 73.5° |
| Chainstay length | 407 | 407 | 407 | 407 |
| Wheelbase | 995 | 997 | 1,008 | 1,023 |
| BB drop | 72 | 70 | 70 | 70 |
| Seat tube (method not stated) | 485 | 510 | 540 | 560 |
| Seat angle (method not stated) | 76.0° | 75.5° | 75.0° | 74.5° |
Source: Ridley 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.
Bikes with similar geometry (size S)
The closest size of other road models, by stack and reach.
Frequently asked questions
What size Noah 3.0 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 532/392 mm in size XS to 594/420 mm in size L). The size finder on this page shows the closest size and the stem and spacers you would need.
What are the stack and reach of the Noah 3.0 in size S?
Stack of 549 mm and reach of 403 mm, with an effective top tube of 545 mm and a head angle of 73.0°.
Is the Noah 3.0 a racing or an endurance bike?
Racing. In size S its stack-to-reach ratio is at percentile 12 of road bikes: a low, stretched position.