standard / default rider 183 cm
Honda CB400 Super Four vs Triumph Street Twin ergonomics
Honda CB400 Super Four and Triumph Street Twin 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 CB400 Super Four
All contacts reached
Triumph Street Twin
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 CB400 Super Four has a 755 mm seat; the Triumph Street Twin sits at 760 mm — a 5 mm difference. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 76 cm for the Honda CB400 Super Four and 76 cm for the Triumph Street Twin.
That makes the Honda CB400 Super Four the easier reach to the ground — the safer pick for shorter riders or anyone who wants both feet planted at a stop — while the Triumph Street Twin gives taller riders more legroom and a more open knee bend. Load your own height and inseam into the simulator to see exactly how each one fits you.
Geometry snapshot
| Spec | Honda CB400 Super Four | Triumph Street Twin |
|---|---|---|
| Seat height | 755 mm | 760 mm |
| Wheelbase | 1,410 mm | 1,415 mm |
| Wet weight | 201 kg | 216 kg |
| Displacement | 399 cc | 900 cc |
Posture metrics
Knee angle
- Honda CB400 Super Four
- Sport (58.0 deg)
- Triumph Street Twin
- Sport (58.0 deg)
Hip angle
- Honda CB400 Super Four
- Neutral (94.8 deg)
- Triumph Street Twin
- Neutral (94.9 deg)
Elbow angle
- Honda CB400 Super Four
- Relaxed (143.3 deg)
- Triumph Street Twin
- Relaxed (143.3 deg)
Torso lean
- Honda CB400 Super Four
- Neutral (11.5 deg)
- Triumph Street Twin
- Neutral (11.5 deg)