standard / default rider 183 cm
Honda ST125 Dax vs Triumph Thunderbird Sport 900 ergonomics
Honda ST125 Dax and Triumph Thunderbird Sport 900 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
Triumph Thunderbird Sport 900
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 Triumph Thunderbird Sport 900 sits at 775 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 Triumph Thunderbird Sport 900.
Geometry snapshot
| Spec | Honda ST125 Dax | Triumph Thunderbird Sport 900 |
|---|---|---|
| Seat height | 775 mm | 775 mm |
| Wheelbase | 1,200 mm | 1,550 mm |
| Wet weight | 107 kg | - |
| Displacement | 124 cc | 885 cc |
Posture metrics
Knee angle
- Honda ST125 Dax
- Sport (57.5 deg)
- Triumph Thunderbird Sport 900
- Sport (58.3 deg)
Hip angle
- Honda ST125 Dax
- Neutral (99.6 deg)
- Triumph Thunderbird Sport 900
- Neutral (91.8 deg)
Elbow angle
- Honda ST125 Dax
- Relaxed (143.3 deg)
- Triumph Thunderbird Sport 900
- Relaxed (143.3 deg)
Torso lean
- Honda ST125 Dax
- Neutral (8.3 deg)
- Triumph Thunderbird Sport 900
- Neutral (13.5 deg)