Geometry ?
Dengfu R12 2026 geometry in sizes 49cm–61cm: stack 508–612 mm, reach 374–413 mm, head angle 71–73.5°.
| 49cm | 52cm | 54cm | 56cm | 58cm | 61cm | |
|---|---|---|---|---|---|---|
| Stack | 508 mm | 525.6 mm | 546.4 mm | 567.2 mm | 596 mm | 612 mm |
| Reach | 374 mm | 384 mm | 393 mm | 397 mm | 403 mm | 413 mm |
| Head angle | 71° | 72° | 72.5° | 73° | 73° | 73.5° |
| Seat angle | 75° | 74.5° | 74° | 73.5° | 73° | 73° |
| Seat tube (?) | 470 mm | 490 mm | 510 mm | 530 mm | 550 mm | 580 mm |
| Head tube | 105 mm | 120 mm | 140 mm | 160 mm | 190 mm | 205 mm |
| Chainstay | 408 mm | 408 mm | 408 mm | 408 mm | 408 mm | 408 mm |
| Wheelbase | 971.6 mm | 978.9 mm | 990.1 mm | 995.4 mm | 1010 mm | 1019.8 mm |
| Fork offset | 43 mm | 43 mm | 43 mm | 43 mm | 43 mm | 43 mm |
| Stock build by size | ||||||
| Stem | 90 mm | 100 mm | 100 mm | 110 mm | 110 mm | 120 mm |
| Bar width | 400 mm | 400 mm | 420 mm | 420 mm | 440 mm | 440 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: dengfubike.com, checked 12 Nov 2026 · bar position: worked out from published data
Stock build
R12 DISC Economical / R12 DISC Standard / R12 DISC Professional
Source: dengfubike.com, checked 12 Nov 2026
Frames with similar geometry
Stack and reach within 12 mm of size 49cm (stack 508 / reach 374 mm).
Stack and reach within 12 mm of size 52cm (stack 525.6 / reach 384 mm).
Stack and reach within 12 mm of size 54cm (stack 546.4 / reach 393 mm).
Stack and reach within 12 mm of size 56cm (stack 567.2 / reach 397 mm).
Stack and reach within 12 mm of size 58cm (stack 596 / reach 403 mm).
Stack and reach within 12 mm of size 61cm (stack 612 / reach 413 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 1 value for this model’s stem and bars. Add them