standard / default rider 183 cm
Honda ST125 Dax vs Yamaha XJ600 Seca II ergonomics
Honda ST125 Dax and Yamaha XJ600 Seca II land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
Honda ST125 Dax
95Comfortable
All contacts reached
Yamaha XJ600 Seca II
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 Honda ST125 Dax has a 775 mm seat; the Yamaha XJ600 Seca II sits at 777 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 78 cm for the Honda ST125 Dax and 78 cm for the Yamaha XJ600 Seca II.
Geometry snapshot
| Spec | Honda ST125 Dax | Yamaha XJ600 Seca II |
|---|---|---|
| Seat height | 775 mm | 777 mm |
| Wheelbase | 1,200 mm | 1,460 mm |
| Wet weight | 107 kg | 204 kg |
| Displacement | 124 cc | 599 cc |
Posture metrics
Knee angle
- Honda ST125 Dax
- Sport (57.5 deg)
- Yamaha XJ600 Seca II
- Sport (58.1 deg)
Hip angle
- Honda ST125 Dax
- Neutral (99.6 deg)
- Yamaha XJ600 Seca II
- Neutral (93.7 deg)
Elbow angle
- Honda ST125 Dax
- Relaxed (143.3 deg)
- Yamaha XJ600 Seca II
- Relaxed (143.3 deg)
Torso lean
- Honda ST125 Dax
- Neutral (8.3 deg)
- Yamaha XJ600 Seca II
- Neutral (12.2 deg)