Geometry ?
Kinesis Aithein Disc 2026 geometry in sizes 47–59: stack 525–605 mm, reach 375–407 mm, head angle 72–73°.
| 47 | 50 | 53 | 56 | 59 | |
|---|---|---|---|---|---|
| Stack | 525 mm | 540 mm | 559 mm | 582 mm | 605 mm |
| Reach | 375 mm | 383 mm | 391 mm | 399 mm | 407 mm |
| Head angle | 72° | 72.1° | 72.4° | 72.7° | 73° |
| Seat angle | 75° | 74.3° | 74° | 74° | 73.5° |
| Seat tube (c-t) | 450 mm | 490 mm | 530 mm | 560 mm | 590 mm |
| Head tube | 124 mm | 140 mm | 162 mm | 184 mm | 208 mm |
| Top tube (effective) | 516 mm | 535 mm | 551 mm | 566 mm | 586 mm |
| BB drop | 72 mm | 72 mm | 70 mm | 70 mm | 69 mm |
| Chainstay | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm |
| Wheelbase | 967.6 mm | 979.6 mm | 992.2 mm | 1004.2 mm | 1016.7 mm |
| Fork length | 368 mm | 368 mm | 368 mm | 368 mm | 368 mm |
| Fork offset | 45 mm | 45 mm | 45 mm | 45 mm | 45 mm |
Source: kinesisbikes.co.uk, checked 7 Nov 2026 · bar position: worked out from published data
An older model year in the archive with the same stack, reach and head angle: 2021. Source: bikeradar.com
Stock build
I don’t have the build for each size yet.
Frames with similar geometry
Stack and reach within 12 mm of size 47 (stack 525 / reach 375 mm).
Stack and reach within 12 mm of size 50 (stack 540 / reach 383 mm).
Stack and reach within 12 mm of size 53 (stack 559 / reach 391 mm).
Stack and reach within 12 mm of size 56 (stack 582 / reach 399 mm).
Stack and reach within 12 mm of size 59 (stack 605 / reach 407 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 7 values for this model’s stem and bars. Add them