Geometry ?
Passoni Prima Disco 2026 geometry in sizes 48–60: stack 519–622 mm, reach 361–405 mm, head angle 69–72.5°.
| 48 | 50 | 52 | 54 | 56 | 58 | 60 | |
|---|---|---|---|---|---|---|---|
| Stack | 519 mm | 526 mm | 540 mm | 559 mm | 584 mm | 608 mm | 622 mm |
| Reach | 361 mm | 368 mm | 375 mm | 383 mm | 389 mm | 394 mm | 405 mm |
| Head angle | 69° | 70° | 71° | 71.5° | 72° | 72.5° | 72.5° |
| Seat angle | 75.5° | 75° | 74.5° | 74° | 73.8° | 73° | 73° |
| Seat tube (?) | 495 mm | 503 mm | 520 mm | 541 mm | 567 mm | 595 mm | 610 mm |
| Head tube | 130 mm | 134 mm | 145 mm | 164 mm | 188 mm | 211 mm | 225 mm |
| BB drop | 70 mm | 70 mm | 70 mm | 70 mm | 70 mm | 70 mm | 70 mm |
| Chainstay | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm |
| Fork length | 368 mm | 368 mm | 368 mm | 368 mm | 368 mm | 368 mm | 368 mm |
| Fork offset | 45 mm | 45 mm | 45 mm | 45 mm | 45 mm | 45 mm | 45 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: passoni.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 48 (stack 519 / reach 361 mm).
Stack and reach within 12 mm of size 50 (stack 526 / reach 368 mm).
Stack and reach within 12 mm of size 52 (stack 540 / reach 375 mm).
Stack and reach within 12 mm of size 54 (stack 559 / reach 383 mm).
Stack and reach within 12 mm of size 56 (stack 584 / reach 389 mm).
Stack and reach within 12 mm of size 58 (stack 608 / reach 394 mm).
Stack and reach within 12 mm of size 60 (stack 622 / reach 405 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 9 values for this model’s stem and bars. Add them