bike geometry
Jena 2026
Compare size-specific bike geometry, including reach, stack, angles, wheelbase and the measurements that influence fit and handling.
Wilier › Jena › Standard › Jena
Jena geometry measurements
Choose the recorded size and configuration. Geometry figures can change by size; RideDNA does not collapse those values into one misleading answer.
What is the reach of the Jena?
Reach is the horizontal distance from the bottom bracket to the top of the head tube. Also searched as frame reach.
| Configuration | Size | Reach | Source |
|---|---|---|---|
| Jena geometry | L | 391 mm | RideDNA-derived |
| Jena geometry | M | 382 mm | RideDNA-derived |
| Jena geometry | S | 372 mm | RideDNA-derived |
| Jena geometry | XS | 363 mm | RideDNA-derived |
| Jena geometry | XL | 401 mm | RideDNA-derived |
What is the stack of the Jena?
Stack is the vertical distance from the bottom bracket to the top of the head tube. Also searched as frame stack.
| Configuration | Size | Stack | Source |
|---|---|---|---|
| Jena geometry | L | 608 mm | RideDNA-derived |
| Jena geometry | M | 582 mm | RideDNA-derived |
| Jena geometry | S | 556 mm | RideDNA-derived |
| Jena geometry | XS | 531 mm | RideDNA-derived |
| Jena geometry | XL | 633 mm | RideDNA-derived |
What is the effective top tube of the Jena?
Effective top tube is the horizontal distance between the head-tube and seat-tube centerlines. Also searched as ETT, virtual top tube, horizontal top tube.
| Configuration | Size | Effective top tube | Source |
|---|---|---|---|
| Jena geometry | L | 577 mm | RideDNA-derived |
| Jena geometry | M | 554 mm | RideDNA-derived |
| Jena geometry | S | 531 mm | RideDNA-derived |
| Jena geometry | XS | 508 mm | RideDNA-derived |
| Jena geometry | XL | 600 mm | RideDNA-derived |
What is the head tube angle of the Jena?
Head tube angle describes the steering-axis angle relative to the ground. Also searched as HTA, head angle, steering angle.
| Configuration | Size | Head tube angle | Source |
|---|---|---|---|
| Jena geometry | L | 71.5 ° | RideDNA-derived |
| Jena geometry | M | 71 ° | RideDNA-derived |
| Jena geometry | S | 70.5 ° | RideDNA-derived |
| Jena geometry | XS | 70 ° | RideDNA-derived |
| Jena geometry | XL | 72 ° | RideDNA-derived |
What is the seat tube angle of the Jena?
Seat tube angle describes the seat-tube angle relative to the ground. Also searched as STA, seat angle, effective seat angle.
| Configuration | Size | Seat tube angle | Source |
|---|---|---|---|
| Jena geometry | L | 73.1 ° | RideDNA-derived |
| Jena geometry | M | 73.7 ° | RideDNA-derived |
| Jena geometry | S | 74.3 ° | RideDNA-derived |
| Jena geometry | XS | 75 ° | RideDNA-derived |
| Jena geometry | XL | 72.6 ° | RideDNA-derived |
What is the front center of the Jena?
Front center is the distance from the bottom bracket to the front wheel axle. Also searched as front centre.
| Configuration | Size | Front center | Source |
|---|---|---|---|
| Jena geometry | L | 0 mm | RideDNA-derived |
| Jena geometry | M | 0 mm | RideDNA-derived |
| Jena geometry | S | 0 mm | RideDNA-derived |
| Jena geometry | XS | 0 mm | RideDNA-derived |
| Jena geometry | XL | 0 mm | RideDNA-derived |
What is the head tube length of the Jena?
Head tube length is the measured length of the frame's head tube. Also searched as Head tube, head tube.
| Configuration | Size | Head tube length | Source |
|---|---|---|---|
| Jena geometry | L | 175 mm | RideDNA-derived |
| Jena geometry | M | 150 mm | RideDNA-derived |
| Jena geometry | S | 125 mm | RideDNA-derived |
| Jena geometry | XS | 100 mm | RideDNA-derived |
| Jena geometry | XL | 200 mm | RideDNA-derived |
What is the seat tube length of the Jena?
Seat tube length is the recorded length of the frame's seat tube; measurement conventions can differ by manufacturer. Also searched as Seat tube, seat tube, frame size.
| Configuration | Size | Seat tube length | Source |
|---|---|---|---|
| Jena geometry | L | 470 mm | RideDNA-derived |
| Jena geometry | M | 440 mm | RideDNA-derived |
| Jena geometry | S | 410 mm | RideDNA-derived |
| Jena geometry | XS | 380 mm | RideDNA-derived |
| Jena geometry | XL | 510 mm | RideDNA-derived |
Geometry
Available sizes: L, M, S, XS, XL.
Jena geometry
Jump to size: XS · S · M · L · XL
| Size | Reach | Stack | ETT | HTA | STA | Trail | Wheelbase | Chainstay | BB drop | BB height | Front center | Fork offset | Head tube | Seat tube | Standover | Fork length | Wheel flop | Max tire |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| XS | 363 mm | 531 mm | 508 mm | 70 ° | 75 ° | — | — | — | — | — | 0 mm | — | 100 mm | 380 mm | — | — | — | — |
| S | 372 mm | 556 mm | 531 mm | 70.5 ° | 74.3 ° | — | — | — | — | — | 0 mm | — | 125 mm | 410 mm | — | — | — | — |
| M | 382 mm | 582 mm | 554 mm | 71 ° | 73.7 ° | — | — | — | — | — | 0 mm | — | 150 mm | 440 mm | — | — | — | — |
| L | 391 mm | 608 mm | 577 mm | 71.5 ° | 73.1 ° | — | — | — | — | — | 0 mm | — | 175 mm | 470 mm | — | — | — | — |
| XL | 401 mm | 633 mm | 600 mm | 72 ° | 72.6 ° | — | — | — | — | — | 0 mm | — | 200 mm | 510 mm | — | — | — | — |
Length measurements are in millimeters; HTA and STA are in degrees. ETT means effective top tube.
Size-to-size changes
Differences are calculated from the recorded values; they are not fit recommendations.
- Jena geometry: XS → S — Reach +9 mm, Stack +25 mm, ETT +23 mm, HTA +0.5 °, STA -0.7 °, Front center +0 mm, Head tube +25 mm, Seat tube +30 mm
- Jena geometry: S → M — Reach +10 mm, Stack +26 mm, ETT +23 mm, HTA +0.5 °, STA -0.6 °, Front center +0 mm, Head tube +25 mm, Seat tube +30 mm
- Jena geometry: M → L — Reach +9 mm, Stack +26 mm, ETT +23 mm, HTA +0.5 °, STA -0.6 °, Front center +0 mm, Head tube +25 mm, Seat tube +30 mm
- Jena geometry: L → XL — Reach +10 mm, Stack +25 mm, ETT +23 mm, HTA +0.5 °, STA -0.5 °, Front center +0 mm, Head tube +25 mm, Seat tube +40 mm
RideDNA-derived values
These deterministic calculations use the recorded manufacturer inputs above. They are separate from manufacturer facts and are not fit recommendations.
- Jena geometry size L stack Reach Ratio: 1.55
- Jena geometry size M stack Reach Ratio: 1.52
- Jena geometry size S stack Reach Ratio: 1.49
- Jena geometry size XS stack Reach Ratio: 1.46
- Jena geometry size XL stack Reach Ratio: 1.58
Bike details
- competitor Model Id
- 78ac97dc-cfb2-40a3-9023-01d102119d71