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 ?
Pearson On&On 2026 geometry in sizes 1/49–5/58: stack 542–617 mm, reach 365–399 mm, head angle 70.5–71.5°.
| 1/49 | 2/52 | 3/54 | 4/56 | 5/58 | |
|---|---|---|---|---|---|
| Stack | 542 mm | 558 mm | 579 mm | 598 mm | 617 mm |
| Reach | 365 mm | 373 mm | 381 mm | 390 mm | 399 mm |
| Head angle | 70.5° | 71° | 71.5° | 71.5° | 71.5° |
| Seat angle | 74° | 73.5° | 73.5° | 73.5° | 73.5° |
| Seat tube (?) | 470 mm | 495 mm | 520 mm | 545 mm | 570 mm |
| Head tube | 110 mm | 125 mm | 145 mm | 165 mm | 185 mm |
| Top tube (effective) | 521 mm | 539 mm | 553 mm | 568 mm | 583 mm |
| BB drop | 78 mm | 78 mm | 78 mm | 78 mm | 78 mm |
| Chainstay | 435 mm | 435 mm | 435 mm | 435 mm | 435 mm |
| Wheelbase | 1011 mm | 1020 mm | 1030 mm | 1046 mm | 1061 mm |
| Fork offset | 50 mm | 50 mm | 50 mm | 50 mm | 50 mm |
(?) by the seat tube length: the manufacturer doesn’t say whether it’s measured centre to centre (c-c) or centre to top (c-t).
Source: pearsoncycles.com, 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 1/49 (stack 542 / reach 365 mm).
Stack and reach within 12 mm of size 2/52 (stack 558 / reach 373 mm).
Stack and reach within 12 mm of size 3/54 (stack 579 / reach 381 mm).
Stack and reach within 12 mm of size 4/56 (stack 598 / reach 390 mm).
Stack and reach within 12 mm of size 5/58 (stack 617 / reach 399 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 2 values for this model’s stem and bars. Add them