Geometry ?
Massi Across Alu 2026 geometry in sizes 48–58: stack 535–621 mm, reach 372–400 mm, head angle 70–71°.
| 48 | 50 | 52 | 54 | 56 | 58 | |
|---|---|---|---|---|---|---|
| Stack | 535 mm | 554 mm | 565 mm | 583 mm | 602 mm | 621 mm |
| Reach | 372 mm | 378 mm | 387 mm | 391 mm | 395 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 | 145 mm | 160 mm | 180 mm | 200 mm |
| Chainstay | 445 mm | 445 mm | 445 mm | 445 mm | 445 mm | 445 mm |
| Wheelbase | 1043 mm | 1056 mm | 1064 mm | 1064 mm | 1074 mm | 1086 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 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 535 / reach 372 mm).
Stack and reach within 12 mm of size 50 (stack 554 / reach 378 mm).
Stack and reach within 12 mm of size 52 (stack 565 / reach 387 mm).
Stack and reach within 12 mm of size 54 (stack 583 / reach 391 mm).
Stack and reach within 12 mm of size 56 (stack 602 / reach 395 mm).
Stack and reach within 12 mm of size 58 (stack 621 / 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