Geometry ?
Sonder Rubicon 2026 geometry in sizes Small–Medium: stack 585–599 mm, reach 380–395 mm, head angle 67°.
| Small | Medium | |
|---|---|---|
| Stack | 585 mm | 599 mm |
| Reach | 380 mm | 395 mm |
| Head angle | 67° | 67° |
| Seat angle | 74.2° | 74.2° |
| Seat tube (?) | 460 mm | 490 mm |
| Head tube | 105 mm | 120 mm |
| Top tube (effective) | 545 mm | 565.8 mm |
| BB drop | 80 mm | 80 mm |
| Chainstay | 440 mm | 440 mm |
| Wheelbase | 1081 mm | 1102 mm |
| Standover | 766.7 mm | 792.1 mm |
| Fork length | 465 mm | 465 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: alpkit.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 Small (stack 585 / reach 380 mm).
8bar Mitte Alu V4 (gravel) (2026)size M · stack 585 / reach 380 mm8bar Mitte Ti V2 (2026)size Medium · stack 585 / reach 380 mm8bar MITTE V3 2in1 (2026)size M · stack 585 / reach 380 mmSurly Grappler (2026)size XS · stack 585 / reach 381 mmSalsa Warbird C (2025)size 56cm · stack 585 / reach 381 mmApollo Scout 31X / 30 (2026)size L · stack 586 / reach 381 mm
Stack and reach within 12 mm of size Medium (stack 599 / reach 395 mm).
Carraro Gravel AR2 (2026)size L · stack 599 / reach 395 mmCarraro Gravel GT (2026)size L · stack 599 / reach 395 mmCorratec Allroad A (2027)size 58 · stack 599 / reach 395 mmCrust Bombora (2026)size Large · stack 599 / reach 395 mmCrust Evasion (2026)size Large · stack 599 / reach 395 mmDengfu R20 (2026)size 57/L · stack 598 / reach 395 mm
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 4 values for this model’s stem and bars. Add them