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Rider Height
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naked / default rider 183 cm

QJ Motor SRK 800 vs Yamaha FZ8 ergonomics

QJ Motor SRK 800 and Yamaha FZ8 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 FZ8

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 FZ8 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 FZ8
SpecQJ Motor SRK 800Yamaha FZ8
Seat height815 mm815 mm
Wheelbase1,450 mm1,460 mm
Wet weight207 kg211 kg
Displacement778 cc779 cc

Posture metrics

Knee angle

QJ Motor SRK 800
Sport (61.7 deg)
Yamaha FZ8
Sport (61.8 deg)

Hip angle

QJ Motor SRK 800
Neutral (91.5 deg)
Yamaha FZ8
Neutral (91.2 deg)

Elbow angle

QJ Motor SRK 800
Relaxed (143.3 deg)
Yamaha FZ8
Relaxed (143.3 deg)

Torso lean

QJ Motor SRK 800
Neutral (12.9 deg)
Yamaha FZ8
Neutral (13.1 deg)