electric / default rider 183 cm
CAKE Osa+ vs Zero Motorcycles XU ZF2.8 ergonomics
CAKE Osa+ and Zero Motorcycles XU ZF2.8 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
CAKE Osa+
All contacts reached
Zero Motorcycles XU ZF2.8
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 CAKE Osa+ lists a 795 mm seat; the Zero Motorcycles XU ZF2.8 lists 790 mm — a 5 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 Zero Motorcycles XU ZF2.8 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 | CAKE Osa+ | Zero Motorcycles XU ZF2.8 |
|---|---|---|
| Seat height | 795 mm | 790 mm |
| Wheelbase | 1,340 mm | 1,400 mm |
| Wet weight | 98 kg | - |
| Displacement | - | - |
Posture metrics
Knee angle
- CAKE Osa+
- Sport (57.8 deg)
- Zero Motorcycles XU ZF2.8
- Sport (58.0 deg)
Hip angle
- CAKE Osa+
- Neutral (96.5 deg)
- Zero Motorcycles XU ZF2.8
- Neutral (95.1 deg)
Elbow angle
- CAKE Osa+
- Relaxed (143.3 deg)
- Zero Motorcycles XU ZF2.8
- Relaxed (143.3 deg)
Torso lean
- CAKE Osa+
- Neutral (10.4 deg)
- Zero Motorcycles XU ZF2.8
- Neutral (11.3 deg)