sport / default rider 183 cm
Aprilia RS 660 vs BMW HP4 ergonomics
Aprilia RS 660 and BMW HP4 land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
Aprilia RS 660
90Comfortable
All contacts reached
BMW HP4
90Comfortable
All contacts reached
The two bikes are close enough that posture preference matters more than the overall score.
Geometry snapshot
| Spec | Aprilia RS 660 | BMW HP4 |
|---|---|---|
| Seat height | 820 mm | 820 mm |
| Wheelbase | 1,370 mm | 1,423 mm |
| Wet weight | 183 kg | - |
| Displacement | 659 cc | 999 cc |
Posture metrics
Knee angle
- Aprilia RS 660
- Sport (65.5 deg)
- BMW HP4
- Sport (60.7 deg)
Hip angle
- Aprilia RS 660
- Neutral (106.6 deg)
- BMW HP4
- Neutral (99.6 deg)
Elbow angle
- Aprilia RS 660
- Relaxed (143.3 deg)
- BMW HP4
- Relaxed (143.3 deg)
Torso lean
- Aprilia RS 660
- Forward (29.1 deg)
- BMW HP4
- Forward (25.5 deg)