Geometry ?
Massi Across Carbon 2026 geometry in sizes 48–58: stack 535–624 mm, reach 356–400 mm, head angle 70–71°.
| 48 | 50 | 52 | 54 | 56 | 58 | |
|---|---|---|---|---|---|---|
| Stack | 535 mm | 554 mm | 567 mm | 582 mm | 600 mm | 624 mm |
| Reach | 356 mm | 366 mm | 372 mm | 378 mm | 386 mm | 400 mm |
| Head angle | 70° | 70° | 70.5° | 71° | 71° | 71° |
| Seat angle | 75° | 74.5° | 74° | 73.5° | 73.5° | 73° |
| Seat tube (?) | 480 mm | 500 mm | 520 mm | 540 mm | 560 mm | 580 mm |
| Head tube | 115 mm | 135 mm | 147 mm | 159 mm | 178 mm | 203 mm |
| Top tube (effective) | 499 mm | 520 mm | 535 mm | 551 mm | 564 mm | 591 mm |
| Wheelbase | 1012 mm | 1029 mm | 1035 mm | 1036 mm | 1050 mm | 1072 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: massi.bike, checked 12 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 535 / reach 356 mm).
Stack and reach within 12 mm of size 50 (stack 554 / reach 366 mm).
Stack and reach within 12 mm of size 52 (stack 567 / reach 372 mm).
Stack and reach within 12 mm of size 54 (stack 582 / reach 378 mm).
Stack and reach within 12 mm of size 56 (stack 600 / reach 386 mm).
Stack and reach within 12 mm of size 58 (stack 624 / reach 400 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 8 values for this model’s stem and bars. Add them