Wilier Triestina Jareen geometryGravel · 2025 · 5 sizes, from XS to XL
The Wilier Triestina Jareen is a gravel bike available in 5 sizes, from XS to XL. Stack ranges from 524 to 604 mm and reach from 368 to 396 mm. Its position sits between racing and endurance. All sizes share 440 mm chainstays. Data from 2025; geometry from 2024, 2023 is also available.
What size Jareen 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 Wilier Triestina. The ones that matter most for choosing a size are in bold.
| Size | XS | S | M | L | XL |
|---|---|---|---|---|---|
| Stack | 524 | 546 | 566 | 585 | 604 |
| Reach | 368 | 376 | 383 | 390 | 396 |
| Effective top tube | 511 | 529 | 547 | 565 | 582 |
| Seat tube (centre-to-top) | 460 | 490 | 510 | 530 | 550 |
| Seat tube (centre-to-centre) | 405 | 435 | 455 | 475 | 495 |
| Head tube length | 100 | 120 | 140 | 160 | 180 |
| Head angle | 70.3° | 71.0° | 71.5° | 71.5° | 71.5° |
| Chainstay length | 440 | 440 | 440 | 440 | 440 |
| Seat angle (method not stated) | 75.0° | 74.5° | 74.0° | 73.5° | 73.0° |
Source: Wilier Triestina 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 gravel bikes. Further right means more of that quality.
Bikes with similar geometry (size M)
The closest size of other gravel models, by stack and reach.
Frequently asked questions
What size Jareen 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 524/368 mm in size XS to 604/396 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 Jareen in size M?
Stack of 566 mm and reach of 383 mm, with an effective top tube of 547 mm and a head angle of 71.5°.
Is the Jareen a racing or an endurance bike?
In between. In size M its stack-to-reach ratio is at percentile 59 of gravel bikes: neither very low nor very tall.