Jan Janssen Spirit (2026)
Good to know: Configurable build
Configurable build (at least partly: the cockpit or bar width, for example). The stock build below is only one of the options.
Geometry ?
Jan Janssen Spirit 2026 geometry in sizes S–XL: stack 552–616 mm, reach 362–407 mm, head angle 69.5–73°.
| S | M | L | XL | |
|---|---|---|---|---|
| Stack | 552 mm | 586 mm | 611 mm | 616 mm |
| Reach | 362 mm | 370 mm | 384 mm | 407 mm |
| Head angle | 69.5° | 71° | 72.5° | 73° |
| Seat angle | 74° | 73.5° | 73.5° | 73° |
| Seat tube (c-t) | 500 mm | 530 mm | 560 mm | 590 mm |
| Head tube | 120 mm | 150 mm | 170 mm | 180 mm |
| Wheelbase | 1016 mm | 1020 mm | 1028 mm | 1048 mm |
Source: janjanssen.nl, checked 13 Nov 2026 · bar position: worked out from published data
Stock build
I don’t have the build for each size yet.
Frames with similar geometry
Stack and reach within 12 mm of size S (stack 552 / reach 362 mm).
Stack and reach within 12 mm of size M (stack 586 / reach 370 mm).
Stack and reach within 12 mm of size L (stack 611 / reach 384 mm).
Stack and reach within 12 mm of size XL (stack 616 / reach 407 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 6 values for this model’s stem and bars. Add them