Megamo Jakar Junior geometryGravel · 2027 · 1 size (ONE SIZE)
The Megamo Jakar Junior is a gravel bike available in 1 size (ONE SIZE). Stack ranges from 497 to 497 mm and reach from 342 to 342 mm. Its position sits between racing and endurance.
What size Jakar Junior 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 Megamo. The ones that matter most for choosing a size are in bold.
| Size | ONE SIZE |
|---|---|
| Stack | 497 |
| Reach | 342 |
| Head tube length | 100 |
| Head angle | 70.0° |
| Chainstay length | 420 |
| Wheelbase | 970 |
| Top tube (method not stated) | 480 |
| Seat tube (method not stated) | 390 |
| Seat angle (method not stated) | 74.5° |
Source: Megamo 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 ONE SIZE)
The closest size of other gravel models, by stack and reach.
Frequently asked questions
What are the stack and reach of the Jakar Junior in size ONE SIZE?
Stack of 497 mm and reach of 342 mm.
Is the Jakar Junior a racing or an endurance bike?
In between. In size ONE SIZE its stack-to-reach ratio is at percentile 40 of gravel bikes: neither very low nor very tall.