sport / default rider 183 cm
Aprilia RS4 125 vs Honda CBR1000RR ergonomics
Aprilia RS4 125 and Honda CBR1000RR 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
Aprilia RS4 125
All contacts reached
Honda CBR1000RR
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 Aprilia RS4 125 lists a 820 mm seat; the Honda CBR1000RR lists 820 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 | Aprilia RS4 125 | Honda CBR1000RR |
|---|---|---|
| Seat height | 820 mm | 820 mm |
| Wheelbase | 1,353 mm | 1,410 mm |
| Wet weight | 144 kg | 199 kg |
| Displacement | 124 cc | 999 cc |
Posture metrics
Knee angle
- Aprilia RS4 125
- Sport (60.7 deg)
- Honda CBR1000RR
- Sport (60.7 deg)
Hip angle
- Aprilia RS4 125
- Neutral (99.6 deg)
- Honda CBR1000RR
- Neutral (99.5 deg)
Elbow angle
- Aprilia RS4 125
- Relaxed (143.3 deg)
- Honda CBR1000RR
- Relaxed (143.3 deg)
Torso lean
- Aprilia RS4 125
- Forward (25.2 deg)
- Honda CBR1000RR
- Forward (25.5 deg)