Skip to content
Rider Height
<- Comparison guides

standard / default rider 183 cm

Honda ST125 Dax vs Yamaha XJ600 Seca II ergonomics

Honda ST125 Dax and Yamaha XJ600 Seca II 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

Honda ST125 Dax

Modeled scoreProvisional
95Comfortable

All contacts reached

Yamaha XJ600 Seca II

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 Honda ST125 Dax lists a 775 mm seat; the Yamaha XJ600 Seca II lists 777 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 Honda ST125 Dax and Yamaha XJ600 Seca II
SpecHonda ST125 DaxYamaha XJ600 Seca II
Seat height775 mm777 mm
Wheelbase1,200 mm1,460 mm
Wet weight107 kg204 kg
Displacement124 cc599 cc

Posture metrics

Knee angle

Honda ST125 Dax
Sport (57.5 deg)
Yamaha XJ600 Seca II
Sport (58.1 deg)

Hip angle

Honda ST125 Dax
Neutral (99.6 deg)
Yamaha XJ600 Seca II
Neutral (93.7 deg)

Elbow angle

Honda ST125 Dax
Relaxed (143.3 deg)
Yamaha XJ600 Seca II
Relaxed (143.3 deg)

Torso lean

Honda ST125 Dax
Neutral (8.3 deg)
Yamaha XJ600 Seca II
Neutral (12.2 deg)