standard / default rider 183 cm
Kawasaki KZ400 vs Yamaha XSR900 ergonomics
Yamaha XSR900 has the higher modeled posture score (100 vs 95) for the 183 cm default rider compared with Kawasaki KZ400. Treat this as a planning estimate, not a comfort or purchase verdict; compare the source confidence and confirm both bikes in person.
Modeled fit comparison
Kawasaki KZ400
All contacts reached
Yamaha XSR900
All contacts reached
Yamaha XSR900 scores higher for the 183 cm default rider in this model. 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 KZ400 lists a 830 mm seat; the Yamaha XSR900 lists 815 mm — a 15 mm difference. 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.
On seat height alone, the Yamaha XSR900 has the easier modeled ground reach. Load your measurements into the simulator to compare the model, then verify both motorcycles in person.
Geometry snapshot
| Spec | Kawasaki KZ400 | Yamaha XSR900 |
|---|---|---|
| Seat height | 830 mm | 815 mm |
| Wheelbase | 1,360 mm | 1,495 mm |
| Wet weight | - | 196 kg |
| Displacement | 398 cc | 890 cc |
Posture metrics
Knee angle
- Kawasaki KZ400
- Sport (57.9 deg)
- Yamaha XSR900
- Neutral (76.6 deg)
Hip angle
- Kawasaki KZ400
- Neutral (95.9 deg)
- Yamaha XSR900
- Neutral (115.7 deg)
Elbow angle
- Kawasaki KZ400
- Relaxed (143.3 deg)
- Yamaha XSR900
- Relaxed (143.3 deg)
Torso lean
- Kawasaki KZ400
- Neutral (10.7 deg)
- Yamaha XSR900
- Neutral (18.3 deg)