Ridley Grifn Road geometryRoad · 2027 · 6 sizes, from XXS to XL
The Ridley Grifn Road is a road bike available in 6 sizes, from XXS to XL. Stack ranges from 524 to 633 mm and reach from 375 to 412 mm. Its position sits between racing and endurance. All sizes share 420 mm chainstays. Data from 2027; geometry from 2026, 2025 is also available.
What size Grifn Road 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 | XXS | XS | S | M | L | XL |
|---|---|---|---|---|---|---|
| Stack | 524 | 540 | 563 | 587 | 614 | 633 |
| Reach | 375 | 375 | 383 | 391 | 403 | 412 |
| Effective top tube | 515 | 525 | 545 | 565 | 585 | 605 |
| Head tube length | 100 | 115 | 140 | 165 | 195 | 215 |
| Head angle | 71.0° | 71.5° | 72.0° | 72.0° | 72.0° | 72.0° |
| Chainstay length | 420 | 420 | 420 | 420 | 420 | 420 |
| Wheelbase | 992 | 993 | 1,005 | 1,021 | 1,043 | 1,058 |
| BB drop | 75 | 75 | 73 | 73 | 71 | 71 |
| Standover | 749 | 784 | 810 | 834 | 862 | 881 |
| Seat tube (method not stated) | 440 | 470 | 500 | 520 | 545 | 570 |
| Seat angle (method not stated) | 75.0° | 74.5° | 74.0° | 73.5° | 73.5° | 73.0° |
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 Grifn Road 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 524/375 mm in size XXS to 633/412 mm in size XL). 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 Grifn Road in size S?
Stack of 563 mm and reach of 383 mm, with an effective top tube of 545 mm and a head angle of 72.0°.
Is the Grifn Road a racing or an endurance bike?
In between. In size S its stack-to-reach ratio is at percentile 64 of road bikes: neither very low nor very tall.
Does it have the same geometry as the Grifn RS Road?
In size S, yes: same stack and reach. If one already fits you, the same size of the other will put you in the same position.