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 ?
Mosaic GT-1 i55 2026 geometry in sizes 48–62: stack 543–660 mm, reach 373–404 mm, head angle 70–71°.
| 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | |
|---|---|---|---|---|---|---|---|---|
| Stack | 543 mm | 559 mm | 575 mm | 584 mm | 594 mm | 618 mm | 636 mm | 660 mm |
| Reach | 373 mm | 379 mm | 379 mm | 381 mm | 392 mm | 399 mm | 402 mm | 404 mm |
| Head angle | 70° | 71° | 71° | 71° | 71° | 71° | 71° | 71° |
| Seat angle | 73° | 73° | 73° | 72° | 72° | 72° | 71° | 71° |
| Seat tube (c-t) | 480 mm | 500 mm | 520 mm | 540 mm | 560 mm | 580 mm | 590 mm | 600 mm |
| Head tube | 100 mm | 115 mm | 130 mm | 140 mm | 150 mm | 175 mm | 195 mm | 220 mm |
| Top tube (effective) | 520 mm | 530 mm | 540 mm | 550 mm | 570 mm | 585 mm | 600 mm | 610 mm |
| BB drop | 80 mm | 80 mm | 80 mm | 80 mm | 80 mm | 80 mm | 80 mm | 80 mm |
| Chainstay | 430 mm | 430 mm | 430 mm | 430 mm | 430 mm | 430 mm | 430 mm | 430 mm |
| Wheelbase | 1022 mm | 1029 mm | 1030 mm | 1035 mm | 1050 mm | 1065 mm | 1074 mm | 1084 mm |
| Standover | 772 mm | 790 mm | 807 mm | 821 mm | 836 mm | 854 mm | 868 mm | 882 mm |
| Fork offset | 55 mm | 55 mm | 55 mm | 55 mm | 55 mm | 55 mm | 55 mm | 55 mm |
Source: mosaiccycles.com, checked 7 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 543 / reach 373 mm).
Stack and reach within 12 mm of size 50 (stack 559 / reach 379 mm).
Stack and reach within 12 mm of size 52 (stack 575 / reach 379 mm).
Stack and reach within 12 mm of size 54 (stack 584 / reach 381 mm).
Stack and reach within 12 mm of size 56 (stack 594 / reach 392 mm).
Stack and reach within 12 mm of size 58 (stack 618 / reach 399 mm).
Stack and reach within 12 mm of size 60 (stack 636 / reach 402 mm).
Stack and reach within 12 mm of size 62 (stack 660 / reach 404 mm).
Spotted a mistake or a missing build? Let me know.