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Rider Height
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supermoto / default rider 183 cm

KTM 640 Duke II vs KTM 690 SMC ergonomics

KTM 640 Duke II and KTM 690 SMC land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.

Fit verdict

KTM 640 Duke II

95Comfortable

All contacts reached

KTM 690 SMC

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 KTM 640 Duke II has a 900 mm seat; the KTM 690 SMC sits at 900 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 KTM 640 Duke II and 90 cm for the KTM 690 SMC.

Geometry snapshot

Geometry comparison for KTM 640 Duke II and KTM 690 SMC
SpecKTM 640 Duke IIKTM 690 SMC
Seat height900 mm900 mm
Wheelbase1,460 mm1,480 mm
Wet weight--
Displacement625 cc654 cc

Posture metrics

Knee angle

KTM 640 Duke II
Sport (58.1 deg)
KTM 690 SMC
Sport (58.1 deg)

Hip angle

KTM 640 Duke II
Neutral (93.7 deg)
KTM 690 SMC
Neutral (93.3 deg)

Elbow angle

KTM 640 Duke II
Relaxed (143.3 deg)
KTM 690 SMC
Relaxed (143.3 deg)

Torso lean

KTM 640 Duke II
Neutral (12.2 deg)
KTM 690 SMC
Neutral (12.5 deg)