bagger / default rider 183 cm
Moto Guzzi MGX-21 vs Yamaha Royal Star Venture S ergonomics
Moto Guzzi MGX-21 and Yamaha Royal Star Venture S 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
Moto Guzzi MGX-21
All contacts reached
Yamaha Royal Star Venture S
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 Moto Guzzi MGX-21 lists a 740 mm seat; the Yamaha Royal Star Venture S lists 750 mm — a 10 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 Moto Guzzi MGX-21 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 | Moto Guzzi MGX-21 | Yamaha Royal Star Venture S |
|---|---|---|
| Seat height | 740 mm | 750 mm |
| Wheelbase | 1,700 mm | 1,705 mm |
| Wet weight | 341 kg | 394 kg |
| Displacement | 1,380 cc | 1,294 cc |
Posture metrics
Knee angle
- Moto Guzzi MGX-21
- Open (114.3 deg)
- Yamaha Royal Star Venture S
- Open (114.7 deg)
Hip angle
- Moto Guzzi MGX-21
- Sport (80.3 deg)
- Yamaha Royal Star Venture S
- Sport (80.3 deg)
Elbow angle
- Moto Guzzi MGX-21
- Relaxed (143.3 deg)
- Yamaha Royal Star Venture S
- Relaxed (143.3 deg)
Torso lean
- Moto Guzzi MGX-21
- Neutral (8.8 deg)
- Yamaha Royal Star Venture S
- Neutral (8.9 deg)