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Rider Height
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naked / default rider 183 cm

Triumph Speed Four vs Yamaha MT-15 ergonomics

Triumph Speed Four and Yamaha MT-15 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 Four

95Comfortable

All contacts reached

Yamaha MT-15

95Comfortable

All contacts reached

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

Geometry snapshot

Geometry comparison for Triumph Speed Four and Yamaha MT-15
SpecTriumph Speed FourYamaha MT-15
Seat height810 mm810 mm
Wheelbase1,394 mm1,335 mm
Wet weight-138 kg
Displacement599 cc155 cc

Posture metrics

Knee angle

Triumph Speed Four
Sport (61.5 deg)
Yamaha MT-15
Sport (61.3 deg)

Hip angle

Triumph Speed Four
Neutral (92.8 deg)
Yamaha MT-15
Neutral (94.5 deg)

Elbow angle

Triumph Speed Four
Relaxed (143.3 deg)
Yamaha MT-15
Relaxed (143.3 deg)

Torso lean

Triumph Speed Four
Neutral (12.0 deg)
Yamaha MT-15
Neutral (11.0 deg)