electric / default rider 183 cm
Alta Motors Redshift SM vs Sur-Ron Ultra Bee HP ergonomics
Alta Motors Redshift SM and Sur-Ron Ultra Bee HP 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
Alta Motors Redshift SM
All contacts reached
Sur-Ron Ultra Bee HP
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 Alta Motors Redshift SM lists a 902 mm seat; the Sur-Ron Ultra Bee HP lists 910 mm — a 8 mm difference. 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.
On seat height alone, the Alta Motors Redshift SM has the easier modeled ground reach. Load your measurements into the simulator to compare the model, then verify both motorcycles in person.
Geometry snapshot
| Spec | Alta Motors Redshift SM | Sur-Ron Ultra Bee HP |
|---|---|---|
| Seat height | 902 mm | 910 mm |
| Wheelbase | 1,438 mm | 1,380 mm |
| Wet weight | 128 kg | 89 kg |
| Displacement | - | - |
Posture metrics
Knee angle
- Alta Motors Redshift SM
- Sport (58.0 deg)
- Sur-Ron Ultra Bee HP
- Sport (57.9 deg)
Hip angle
- Alta Motors Redshift SM
- Neutral (94.3 deg)
- Sur-Ron Ultra Bee HP
- Neutral (95.5 deg)
Elbow angle
- Alta Motors Redshift SM
- Relaxed (143.3 deg)
- Sur-Ron Ultra Bee HP
- Relaxed (143.3 deg)
Torso lean
- Alta Motors Redshift SM
- Neutral (11.9 deg)
- Sur-Ron Ultra Bee HP
- Neutral (11.0 deg)