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Rider Height
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naked / default rider 183 cm

QJ Motor SRK 800 vs Yamaha FZ-09 ergonomics

QJ Motor SRK 800 and Yamaha FZ-09 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

QJ Motor SRK 800

Modeled scoreProvisional
95Comfortable

All contacts reached

Yamaha FZ-09

Modeled scoreProvisional
95Comfortable

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 QJ Motor SRK 800 lists a 815 mm seat; the Yamaha FZ-09 lists 815 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

Geometry comparison for QJ Motor SRK 800 and Yamaha FZ-09
SpecQJ Motor SRK 800Yamaha FZ-09
Seat height815 mm815 mm
Wheelbase1,450 mm1,440 mm
Wet weight207 kg188 kg
Displacement778 cc847 cc

Posture metrics

Knee angle

QJ Motor SRK 800
Sport (61.7 deg)
Yamaha FZ-09
Sport (61.7 deg)

Hip angle

QJ Motor SRK 800
Neutral (91.5 deg)
Yamaha FZ-09
Neutral (91.7 deg)

Elbow angle

QJ Motor SRK 800
Relaxed (143.3 deg)
Yamaha FZ-09
Relaxed (143.3 deg)

Torso lean

QJ Motor SRK 800
Neutral (12.9 deg)
Yamaha FZ-09
Neutral (12.7 deg)