Geometry ?
Seka ExAero GR RDC 2026 geometry in sizes 49–61: stack 524–620 mm, reach 369–408 mm, head angle 70.4–72.2°.
| 49 | 52 | 54 | 56 | 58 | 61 | |
|---|---|---|---|---|---|---|
| Stack | 524 mm | 540 mm | 559 mm | 579 mm | 602 mm | 620 mm |
| Reach | 369 mm | 375 mm | 381 mm | 389 mm | 399 mm | 408 mm |
| Head angle | 70.4° | 71° | 71.3° | 71.6° | 72° | 72.2° |
| Seat angle | 75° | 74.3° | 74° | 74° | 73.5° | 73° |
| Seat tube (?) | 460 mm | 490 mm | 510 mm | 535 mm | 555 mm | 580 mm |
| Head tube | 96.4 mm | 111 mm | 132 mm | 152 mm | 176.5 mm | 195 mm |
| Top tube (effective) | 509 mm | 526 mm | 541 mm | 555 mm | 578 mm | 598 mm |
| BB drop | 74 mm | 74 mm | 72 mm | 72 mm | 70 mm | 70 mm |
| Chainstay | 423 mm | 423 mm | 423 mm | 423 mm | 423 mm | 423 mm |
| Wheelbase | 999 mm | 1005 mm | 1016 mm | 1027 mm | 1042 mm | 1055 mm |
| Standover | 747 mm | 771 mm | 792 mm | 815 mm | 837 mm | 858 mm |
| Fork length | 401 mm | 401 mm | 401 mm | 401 mm | 401 mm | 401 mm |
| Fork offset | 50 mm | 50 mm | 50 mm | 50 mm | 50 mm | 50 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: sekabikes.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 49 (stack 524 / reach 369 mm).
Stack and reach within 12 mm of size 52 (stack 540 / reach 375 mm).
Stack and reach within 12 mm of size 54 (stack 559 / reach 381 mm).
Stack and reach within 12 mm of size 56 (stack 579 / reach 389 mm).
Stack and reach within 12 mm of size 58 (stack 602 / reach 399 mm).
Stack and reach within 12 mm of size 61 (stack 620 / reach 408 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