Geometry ?
Bross Zenith 2026 geometry in sizes XXS–XXL: stack 512.4–595.4 mm, reach 370–405 mm, head angle 70.2–73.5°.
| XXS | XS | S | M | L | XL | XXL | |
|---|---|---|---|---|---|---|---|
| Stack | 512.4 mm | 521 mm | 532.1 mm | 543.1 mm | 560 mm | 577.2 mm | 595.4 mm |
| Reach | 370 mm | 375 mm | 380 mm | 385 mm | 395 mm | 403 mm | 405 mm |
| Head angle | 70.2° | 71° | 72° | 72.8° | 73.5° | 73.5° | 73.5° |
| Seat angle | 75.5° | 75° | 74.3° | 74.3° | 73.5° | 73° | 73° |
| Seat tube (?) | 420 mm | 450 mm | 480 mm | 500 mm | 520 mm | 540 mm | 560 mm |
| Head tube | 116 mm | 122 mm | 130 mm | 138.7 mm | 157 mm | 175 mm | 194 mm |
| Top tube (effective) | 502.6 mm | 514.7 mm | 529.7 mm | 540.5 mm | 561.3 mm | 579.9 mm | 587.3 mm |
| BB drop | 72 mm | 72 mm | 72 mm | 72 mm | 69 mm | 69 mm | 69 mm |
| Chainstay | 408 mm | 408 mm | 408 mm | 408 mm | 408 mm | 408 mm | 408 mm |
| Wheelbase | 980.1 mm | 980.9 mm | 980.5 mm | 984.4 mm | 991.6 mm | 1004.7 mm | 1012.1 mm |
| Fork length | 369 mm | 369 mm | 369 mm | 369 mm | 369 mm | 369 mm | 369 mm |
| Fork offset | 46.9 mm | 46.9 mm | 46.9 mm | 46.9 mm | 46.9 mm | 46.9 mm | 46.9 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: brossbucket.oss-cn-hangzhou.aliyuncs.com, 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 XXS (stack 512.4 / reach 370 mm).
Stack and reach within 12 mm of size XS (stack 521 / reach 375 mm).
Stack and reach within 12 mm of size S (stack 532.1 / reach 380 mm).
Stack and reach within 12 mm of size M (stack 543.1 / reach 385 mm).
Stack and reach within 12 mm of size L (stack 560 / reach 395 mm).
Stack and reach within 12 mm of size XL (stack 577.2 / reach 403 mm).
Stack and reach within 12 mm of size XXL (stack 595.4 / 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