naked / default rider 183 cm
KTM 125 Duke vs KTM 390 Duke ergonomics
KTM 125 Duke and KTM 390 Duke land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
KTM 125 Duke
95Comfortable
All contacts reached
KTM 390 Duke
95Comfortable
All contacts reached
The two bikes are close enough that posture preference matters more than the overall score.
Rider fit: reaching the ground
The KTM 125 Duke has a 800 mm seat; the KTM 390 Duke sits at 800 mm, within a few millimetres of each other. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 80 cm for the KTM 125 Duke and 80 cm for the KTM 390 Duke.
Geometry snapshot
| Spec | KTM 125 Duke | KTM 390 Duke |
|---|---|---|
| Seat height | 800 mm | 800 mm |
| Wheelbase | 1,357 mm | 1,357 mm |
| Wet weight | - | 165 kg |
| Displacement | 124 cc | 399 cc |
Posture metrics
Knee angle
- KTM 125 Duke
- Sport (61.4 deg)
- KTM 390 Duke
- Sport (61.4 deg)
Hip angle
- KTM 125 Duke
- Neutral (93.9 deg)
- KTM 390 Duke
- Neutral (93.9 deg)
Elbow angle
- KTM 125 Duke
- Relaxed (143.3 deg)
- KTM 390 Duke
- Relaxed (143.3 deg)
Torso lean
- KTM 125 Duke
- Neutral (11.3 deg)
- KTM 390 Duke
- Neutral (11.3 deg)