motocross / default rider 183 cm
KTM 125 SX vs KTM 450 SX-F ergonomics
KTM 125 SX and KTM 450 SX-F 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
KTM 125 SX
All contacts reached
KTM 450 SX-F
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 KTM 125 SX lists a 958 mm seat; the KTM 450 SX-F lists 958 mm, within a few millimetres of each other. 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.
Geometry snapshot
| Spec | KTM 125 SX | KTM 450 SX-F |
|---|---|---|
| Seat height | 958 mm | 958 mm |
| Wheelbase | 1,493 mm | 1,491 mm |
| Wet weight | - | - |
| Displacement | 125 cc | 450 cc |
Posture metrics
Knee angle
- KTM 125 SX
- Sport (58.1 deg)
- KTM 450 SX-F
- Sport (58.1 deg)
Hip angle
- KTM 125 SX
- Neutral (93.1 deg)
- KTM 450 SX-F
- Neutral (93.2 deg)
Elbow angle
- KTM 125 SX
- Relaxed (143.3 deg)
- KTM 450 SX-F
- Relaxed (143.3 deg)
Torso lean
- KTM 125 SX
- Neutral (12.7 deg)
- KTM 450 SX-F
- Neutral (12.6 deg)