Geometry ?
Mosaic AR-1 2026 geometry in sizes 48–62: stack 525–628 mm, reach 367–407 mm, head angle 71–72.5°.
| 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | |
|---|---|---|---|---|---|---|---|---|
| Stack | 525 mm | 539 mm | 549 mm | 560 mm | 580 mm | 593 mm | 608 mm | 628 mm |
| Reach | 367 mm | 369 mm | 376 mm | 378 mm | 386 mm | 398 mm | 403 mm | 407 mm |
| Head angle | 71° | 71.3° | 71.3° | 71.3° | 71.5° | 72° | 72.3° | 72.5° |
| Seat angle | 74.5° | 74° | 74° | 73.5° | 73° | 73° | 72.5° | 72.5° |
| Seat tube (c-t) | 480 mm | 500 mm | 520 mm | 540 mm | 560 mm | 580 mm | 590 mm | 620 mm |
| Head tube | 115 mm | 130 mm | 140 mm | 155 mm | 175 mm | 185 mm | 200 mm | 220 mm |
| Top tube (effective) | 515 mm | 525 mm | 535 mm | 545 mm | 565 mm | 580 mm | 595 mm | 605 mm |
| BB drop | 75 mm | 75 mm | 75 mm | 72 mm | 72 mm | 72 mm | 72 mm | 72 mm |
| Chainstay | 384 mm | 384 mm | 384 mm | 384 mm | 384 mm | 384 mm | 389 mm | 389 mm |
| Wheelbase | 994 mm | 999 mm | 1009 mm | 1016 mm | 1029 mm | 1035 mm | 1048 mm | 1056 mm |
| Fork offset | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm | 47 mm | 47 mm | 47 mm |
Source: mosaiccycles.com, checked 13 Nov 2026 · bar position: worked out from published data
Build
Built to measure. The stem, bars and other parts are chosen to suit the rider, so the bike has no stock build. According to the manufacturer’s website.
Frames with similar geometry
Stack and reach within 12 mm of size 48 (stack 525 / reach 367 mm).
Stack and reach within 12 mm of size 50 (stack 539 / reach 369 mm).
Stack and reach within 12 mm of size 52 (stack 549 / reach 376 mm).
Stack and reach within 12 mm of size 54 (stack 560 / reach 378 mm).
Stack and reach within 12 mm of size 56 (stack 580 / reach 386 mm).
Stack and reach within 12 mm of size 58 (stack 593 / reach 398 mm).
Stack and reach within 12 mm of size 60 (stack 608 / reach 403 mm).
Stack and reach within 12 mm of size 62 (stack 628 / reach 407 mm).
Spotted a mistake or a missing build? Let me know.