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supermoto / default rider 183 cm

Aprilia SX 125 vs Beta Motor M4 Motard ergonomics

Aprilia SX 125 and Beta Motor M4 Motard land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.

Fit verdict

Aprilia SX 125

95Comfortable

All contacts reached

Beta Motor M4 Motard

95Comfortable

All contacts reached

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

Geometry snapshot

Geometry comparison for Aprilia SX 125 and Beta Motor M4 Motard
SpecAprilia SX 125Beta Motor M4 Motard
Seat height870 mm870 mm
Wheelbase1,480 mm1,410 mm
Wet weight125 kg-
Displacement125 cc349 cc

Posture metrics

Knee angle

Aprilia SX 125
Sport (58.1 deg)
Beta Motor M4 Motard
Sport (58.0 deg)

Hip angle

Aprilia SX 125
Neutral (93.3 deg)
Beta Motor M4 Motard
Neutral (94.8 deg)

Elbow angle

Aprilia SX 125
Relaxed (143.3 deg)
Beta Motor M4 Motard
Relaxed (143.3 deg)

Torso lean

Aprilia SX 125
Neutral (12.5 deg)
Beta Motor M4 Motard
Neutral (11.5 deg)