Geometry ?
Chumba SOCO 2026 geometry in sizes 50–62: stack 528–643 mm, reach 370–427 mm, head angle 72–73.5°.
| 50 | 52 | 54 | 56 | 58 | 60 | 62 | |
|---|---|---|---|---|---|---|---|
| Stack | 528 mm | 558 mm | 569 mm | 585 mm | 604 mm | 624 mm | 643 mm |
| Reach | 370 mm | 374 mm | 381 mm | 391 mm | 404 mm | 418 mm | 427 mm |
| Head angle | 72° | 72.5° | 73° | 73° | 73° | 73° | 73.5° |
| Seat angle | 74.5° | 74.5° | 74° | 73.5° | 73.5° | 73.5° | 73.5° |
| Head tube | 100 mm | 130 mm | 140 mm | 160 mm | 180 mm | 200 mm | 220 mm |
| Top tube (effective) | 518 mm | 530 mm | 545 mm | 565 mm | 583 mm | 603 mm | 618 mm |
| BB drop | 75 mm | 75 mm | 75 mm | 72 mm | 72 mm | 72 mm | 70 mm |
| Fork length | 382 mm | 382 mm | 382 mm | 382 mm | 382 mm | 382 mm | 382 mm |
| Fork offset | 47 mm | 47 mm | 47 mm | 47 mm | 47 mm | 47 mm | 47 mm |
Source: chumbausa.com, checked 13 Nov 2026 · bar position: worked out from published data
Build
You put the build together when you order from the manufacturer, so the bike has no fixed stock build. According to the manufacturer’s website.
Frames with similar geometry
Stack and reach within 12 mm of size 50 (stack 528 / reach 370 mm).
Stack and reach within 12 mm of size 52 (stack 558 / reach 374 mm).
Stack and reach within 12 mm of size 54 (stack 569 / reach 381 mm).
Stack and reach within 12 mm of size 56 (stack 585 / reach 391 mm).
Stack and reach within 12 mm of size 58 (stack 604 / reach 404 mm).
Stack and reach within 12 mm of size 60 (stack 624 / reach 418 mm).
Stack and reach within 12 mm of size 62 (stack 643 / reach 427 mm).
Spotted a mistake or a missing build? Let me know.