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Rider Height
<- Comparison guides

standard / default rider 183 cm

Triumph Bonneville T120 vs Yamaha SR400 ergonomics

Triumph Bonneville T120 has the higher modeled posture score (100 vs 95) for the 183 cm default rider compared with Yamaha SR400. Treat this as a planning estimate, not a comfort or purchase verdict; compare the source confidence and confirm both bikes in person.

Modeled fit comparison

Triumph Bonneville T120

Modeled scorePartially verified
100Comfortable

All contacts reached

Yamaha SR400

Modeled scoreProvisional
95Comfortable

All contacts reached

Triumph Bonneville T120 scores higher for the 183 cm default rider in this model. 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 Triumph Bonneville T120 lists a 790 mm seat; the Yamaha SR400 lists 790 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 Triumph Bonneville T120 and Yamaha SR400
SpecTriumph Bonneville T120Yamaha SR400
Seat height790 mm790 mm
Wheelbase1,450 mm1,410 mm
Wet weight236 kg174 kg
Displacement1,200 cc399 cc

Posture metrics

Knee angle

Triumph Bonneville T120
Neutral (83.6 deg)
Yamaha SR400
Sport (58.0 deg)

Hip angle

Triumph Bonneville T120
Neutral (113.7 deg)
Yamaha SR400
Neutral (94.8 deg)

Elbow angle

Triumph Bonneville T120
Relaxed (143.3 deg)
Yamaha SR400
Relaxed (143.3 deg)

Torso lean

Triumph Bonneville T120
Neutral (14.8 deg)
Yamaha SR400
Neutral (11.5 deg)