Skip to content
Rider Height
<- Comparison guides

standard / default rider 183 cm

Triumph Speed Twin 900 vs Yamaha XS400 ergonomics

Triumph Speed Twin 900 and Yamaha XS400 land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.

Fit verdict

Triumph Speed Twin 900

95Comfortable

All contacts reached

Yamaha XS400

95Comfortable

All contacts reached

The two bikes are close enough that posture preference matters more than the overall score.

Rider fit: reaching the ground

The Triumph Speed Twin 900 has a 780 mm seat; the Yamaha XS400 sits at 780 mm, within a few millimetres of each other. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 78 cm for the Triumph Speed Twin 900 and 78 cm for the Yamaha XS400.

Geometry snapshot

Geometry comparison for Triumph Speed Twin 900 and Yamaha XS400
SpecTriumph Speed Twin 900Yamaha XS400
Seat height780 mm780 mm
Wheelbase1,435 mm1,364 mm
Wet weight216 kg182 kg
Displacement900 cc391 cc

Posture metrics

Knee angle

Triumph Speed Twin 900
Sport (58.0 deg)
Yamaha XS400
Sport (57.9 deg)

Hip angle

Triumph Speed Twin 900
Neutral (94.3 deg)
Yamaha XS400
Neutral (95.8 deg)

Elbow angle

Triumph Speed Twin 900
Relaxed (143.3 deg)
Yamaha XS400
Relaxed (143.3 deg)

Torso lean

Triumph Speed Twin 900
Neutral (11.8 deg)
Yamaha XS400
Neutral (10.8 deg)