standard / default rider 183 cm
Triumph Speed 400 vs Yamaha XJ550 Seca ergonomics
Triumph Speed 400 and Yamaha XJ550 Seca land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
Triumph Speed 400
95Comfortable
All contacts reached
Yamaha XJ550 Seca
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 Triumph Speed 400 has a 790 mm seat; the Yamaha XJ550 Seca sits at 790 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 79 cm for the Triumph Speed 400 and 79 cm for the Yamaha XJ550 Seca.
Geometry snapshot
| Spec | Triumph Speed 400 | Yamaha XJ550 Seca |
|---|---|---|
| Seat height | 790 mm | 790 mm |
| Wheelbase | 1,377 mm | 1,405 mm |
| Wet weight | 170 kg | 205 kg |
| Displacement | 398 cc | 528 cc |
Posture metrics
Knee angle
- Triumph Speed 400
- Sport (57.9 deg)
- Yamaha XJ550 Seca
- Sport (58.0 deg)
Hip angle
- Triumph Speed 400
- Neutral (95.7 deg)
- Yamaha XJ550 Seca
- Neutral (95.0 deg)
Elbow angle
- Triumph Speed 400
- Relaxed (143.3 deg)
- Yamaha XJ550 Seca
- Relaxed (143.3 deg)
Torso lean
- Triumph Speed 400
- Neutral (11.0 deg)
- Yamaha XJ550 Seca
- Neutral (11.4 deg)