electric / default rider 183 cm
NIU RQi Sport vs Sur-Ron Light Bee X ergonomics
NIU RQi Sport and Sur-Ron Light Bee X land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
NIU RQi Sport
All contacts reached
Sur-Ron Light Bee X
All contacts reached
The two bikes are close enough that posture preference matters more than the overall score.
Rider fit: reaching the ground
The NIU RQi Sport has a 825 mm seat; the Sur-Ron Light Bee X sits at 830 mm — a 5 mm difference. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 83 cm for the NIU RQi Sport and 83 cm for the Sur-Ron Light Bee X.
That makes the NIU RQi Sport the easier reach to the ground — the safer pick for shorter riders or anyone who wants both feet planted at a stop — while the Sur-Ron Light Bee X gives taller riders more legroom and a more open knee bend. Load your own height and inseam into the simulator to see exactly how each one fits you.
Geometry snapshot
| Spec | NIU RQi Sport | Sur-Ron Light Bee X |
|---|---|---|
| Seat height | 825 mm | 830 mm |
| Wheelbase | 1,455 mm | 1,255 mm |
| Wet weight | 186 kg | 57 kg |
| Displacement | - | - |
Posture metrics
Knee angle
- NIU RQi Sport
- Sport (58.1 deg)
- Sur-Ron Light Bee X
- Sport (57.6 deg)
Hip angle
- NIU RQi Sport
- Neutral (93.9 deg)
- Sur-Ron Light Bee X
- Neutral (98.4 deg)
Elbow angle
- NIU RQi Sport
- Relaxed (143.3 deg)
- Sur-Ron Light Bee X
- Relaxed (143.3 deg)
Torso lean
- NIU RQi Sport
- Neutral (12.1 deg)
- Sur-Ron Light Bee X
- Neutral (9.1 deg)