sport / default rider 183 cm
Kawasaki Ninja ZX-25R vs Yamaha FZR400 ergonomics
Kawasaki Ninja ZX-25R and Yamaha FZR400 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 Ninja ZX-25R
All contacts reached
Yamaha FZR400
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 Ninja ZX-25R lists a 785 mm seat; the Yamaha FZR400 lists 785 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 Ninja ZX-25R | Yamaha FZR400 |
|---|---|---|
| Seat height | 785 mm | 785 mm |
| Wheelbase | 1,380 mm | 1,400 mm |
| Wet weight | 180 kg | 186 kg |
| Displacement | 249 cc | 399 cc |
Posture metrics
Knee angle
- Kawasaki Ninja ZX-25R
- Sport (60.7 deg)
- Yamaha FZR400
- Sport (60.7 deg)
Hip angle
- Kawasaki Ninja ZX-25R
- Neutral (99.6 deg)
- Yamaha FZR400
- Neutral (99.5 deg)
Elbow angle
- Kawasaki Ninja ZX-25R
- Relaxed (143.3 deg)
- Yamaha FZR400
- Relaxed (143.3 deg)
Torso lean
- Kawasaki Ninja ZX-25R
- Forward (25.3 deg)
- Yamaha FZR400
- Forward (25.4 deg)