cafe-racer / default rider 183 cm
Kawasaki Z1-R vs Yamaha XSR900 ergonomics
Kawasaki Z1-R and Yamaha XSR900 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 Z1-R
All contacts reached
Yamaha XSR900
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 Z1-R lists a 815 mm seat; the Yamaha XSR900 lists 810 mm — a 5 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 Z1-R | Yamaha XSR900 |
|---|---|---|
| Seat height | 815 mm | 810 mm |
| Wheelbase | 1,505 mm | 1,496 mm |
| Wet weight | - | 193 kg |
| Displacement | 1,015 cc | 890 cc |
Posture metrics
Knee angle
- Kawasaki Z1-R
- Sport (58.2 deg)
- Yamaha XSR900
- Sport (58.2 deg)
Hip angle
- Kawasaki Z1-R
- Neutral (92.8 deg)
- Yamaha XSR900
- Neutral (92.9 deg)
Elbow angle
- Kawasaki Z1-R
- Relaxed (143.3 deg)
- Yamaha XSR900
- Relaxed (143.3 deg)
Torso lean
- Kawasaki Z1-R
- Neutral (12.8 deg)
- Yamaha XSR900
- Neutral (12.7 deg)