sport / default rider 183 cm
QJ Motor SRK 421 RR vs Yamaha TRX850 ergonomics
QJ Motor SRK 421 RR and Yamaha TRX850 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 421 RR
90Comfortable
All contacts reached
Yamaha TRX850
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 421 RR has a 795 mm seat; the Yamaha TRX850 sits at 795 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 80 cm for the QJ Motor SRK 421 RR and 80 cm for the Yamaha TRX850.
Geometry snapshot
| Spec | QJ Motor SRK 421 RR | Yamaha TRX850 |
|---|---|---|
| Seat height | 795 mm | 795 mm |
| Wheelbase | 1,385 mm | 1,435 mm |
| Wet weight | 185 kg | - |
| Displacement | 421 cc | 849 cc |
Posture metrics
Knee angle
- QJ Motor SRK 421 RR
- Sport (60.7 deg)
- Yamaha TRX850
- Sport (60.7 deg)
Hip angle
- QJ Motor SRK 421 RR
- Neutral (99.6 deg)
- Yamaha TRX850
- Neutral (99.3 deg)
Elbow angle
- QJ Motor SRK 421 RR
- Relaxed (143.3 deg)
- Yamaha TRX850
- Relaxed (143.3 deg)
Torso lean
- QJ Motor SRK 421 RR
- Forward (25.3 deg)
- Yamaha TRX850
- Forward (25.6 deg)