Kona
Unit X
Frame
Reynolds 520 Butted Cromoly
Wheel size
29 x 2.6" stock tires
Sizes
4
What it can carry
Mount provision and clearance, as Kona publishes it.
Geometry
All figures in millimetres except angles. Effective top tube and seat tube are the two that decide frame bag fit.
| Size | Eff. top tube | Seat tube | Standover | Head tube | Stack | Reach | Chainstay | Wheelbase | BB drop | Head angle | Seat angle |
|---|---|---|---|---|---|---|---|---|---|---|---|
| S | 582 | 370 | 695 | 110 | 588 | 425 | 430 | 1115 | 65 | 68° | 75° |
| M | 610 | 420 | 731 | 120 | 597 | 450 | 430 | 1144 | 65 | 68° | 75° |
| L | 637 | 470 | 768 | 130 | 606 | 475 | 430 | 1173 | 65 | 68° | 75° |
| XL | 675 | 530 | 810 | 140 | 615 | 510 | 430 | 1211 | 65 | 68° | 75° |
Source: https://konaworld.com/products/unit-x-36sh — checked 2026-08-16. A dash means Konadoesn't publish that figure; we leave it blank rather than estimate.
Note: Current US page verifies geometry, frame material, 29 x 2.6 tires, and modular dropouts, but does not enumerate cargo mounts or tire clearance.
Find bags that fit
The bag finder can load this bike's published geometry directly — pick Kona Unit X and your size, and it will check every bag in the database against your frame triangle.
Open the Bag Finder