sport / default rider 183 cm
QJ Motor SRK 800 RR vs Yamaha YZF-R15 V4 ergonomics
QJ Motor SRK 800 RR and Yamaha YZF-R15 V4 land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
QJ Motor SRK 800 RR
90Comfortable
All contacts reached
Yamaha YZF-R15 V4
90Comfortable
All contacts reached
The two bikes are close enough that posture preference matters more than the overall score.
Rider fit: reaching the ground
The QJ Motor SRK 800 RR has a 815 mm seat; the Yamaha YZF-R15 V4 sits at 815 mm, within a few millimetres of each other. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 82 cm for the QJ Motor SRK 800 RR and 82 cm for the Yamaha YZF-R15 V4.
Geometry snapshot
| Spec | QJ Motor SRK 800 RR | Yamaha YZF-R15 V4 |
|---|---|---|
| Seat height | 815 mm | 815 mm |
| Wheelbase | 1,450 mm | 1,325 mm |
| Wet weight | - | 142 kg |
| Displacement | 778 cc | 155 cc |
Posture metrics
Knee angle
- QJ Motor SRK 800 RR
- Sport (60.7 deg)
- Yamaha YZF-R15 V4
- Sport (60.7 deg)
Hip angle
- QJ Motor SRK 800 RR
- Neutral (99.4 deg)
- Yamaha YZF-R15 V4
- Neutral (99.7 deg)
Elbow angle
- QJ Motor SRK 800 RR
- Relaxed (143.3 deg)
- Yamaha YZF-R15 V4
- Relaxed (143.3 deg)
Torso lean
- QJ Motor SRK 800 RR
- Forward (25.7 deg)
- Yamaha YZF-R15 V4
- Forward (25.1 deg)