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supermoto / default rider 183 cm

Derbi Senda X-Treme 50 SM vs KTM 450 SMR ergonomics

Derbi Senda X-Treme 50 SM and KTM 450 SMR land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.

Fit verdict

Derbi Senda X-Treme 50 SM

95Comfortable

All contacts reached

KTM 450 SMR

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 Derbi Senda X-Treme 50 SM has a 900 mm seat; the KTM 450 SMR sits at 899 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 90 cm for the Derbi Senda X-Treme 50 SM and 90 cm for the KTM 450 SMR.

Geometry snapshot

Geometry comparison for Derbi Senda X-Treme 50 SM and KTM 450 SMR
SpecDerbi Senda X-Treme 50 SMKTM 450 SMR
Seat height900 mm899 mm
Wheelbase1,355 mm1,473 mm
Wet weight--
Displacement50 cc450 cc

Posture metrics

Knee angle

Derbi Senda X-Treme 50 SM
Sport (57.8 deg)
KTM 450 SMR
Sport (58.1 deg)

Hip angle

Derbi Senda X-Treme 50 SM
Neutral (96.1 deg)
KTM 450 SMR
Neutral (93.6 deg)

Elbow angle

Derbi Senda X-Treme 50 SM
Relaxed (143.3 deg)
KTM 450 SMR
Relaxed (143.3 deg)

Torso lean

Derbi Senda X-Treme 50 SM
Neutral (10.6 deg)
KTM 450 SMR
Neutral (12.3 deg)