naked / default rider 183 cm
Kawasaki Z650 vs Triumph Speed 400 ergonomics
Kawasaki Z650 and Triumph Speed 400 have modeled posture scores within three points for the 183 cm default rider. Treat this as a planning estimate; posture preference, data confidence, and a real test sit still matter.
Modeled fit comparison
Kawasaki Z650
All contacts reached
Triumph Speed 400
All contacts reached
The modeled scores are within three points, so the result does not distinguish a higher-scoring bike. Treat the result as a planning estimate and compare each bike's geometry confidence before a real test sit.
Rider fit: reaching the ground
The Kawasaki Z650 lists a 790 mm seat; the Triumph Speed 400 lists 790 mm, within a few millimetres of each other. Seat height is only a first-pass ground-reach input. It does not establish safety or actual foot contact. Seat width, suspension sag, boots, mobility, load, and individual proportions can materially change the result.
Geometry snapshot
| Spec | Kawasaki Z650 | Triumph Speed 400 |
|---|---|---|
| Seat height | 790 mm | 790 mm |
| Wheelbase | 1,410 mm | 1,377 mm |
| Wet weight | 187 kg | 170 kg |
| Displacement | 649 cc | 398 cc |
Posture metrics
Knee angle
- Kawasaki Z650
- Sport (61.6 deg)
- Triumph Speed 400
- Sport (61.4 deg)
Hip angle
- Kawasaki Z650
- Neutral (92.4 deg)
- Triumph Speed 400
- Neutral (93.3 deg)
Elbow angle
- Kawasaki Z650
- Relaxed (143.3 deg)
- Triumph Speed 400
- Relaxed (143.3 deg)
Torso lean
- Kawasaki Z650
- Neutral (12.3 deg)
- Triumph Speed 400
- Neutral (11.7 deg)