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supermoto / default rider 183 cm

Rieju MRT 125 SM AC vs Rieju MRT 50 SM ergonomics

Rieju MRT 125 SM AC and Rieju MRT 50 SM have modeled posture scores within three points for the 183 cm default rider. Treat this as a planning estimate; posture preference, data confidence, and a real test sit still matter.

Modeled fit comparison

Rieju MRT 125 SM AC

Modeled scoreProvisional
95Comfortable

All contacts reached

Rieju MRT 50 SM

Modeled scoreProvisional
95Comfortable

All contacts reached

The modeled scores are within three points, so the result does not distinguish a higher-scoring bike. Treat the result as a planning estimate and compare each bike's geometry confidence before a real test sit.

Rider fit: reaching the ground

The Rieju MRT 125 SM AC lists a 870 mm seat; the Rieju MRT 50 SM lists 870 mm, within a few millimetres of each other. Seat height is only a first-pass ground-reach input. It does not establish safety or actual foot contact. Seat width, suspension sag, boots, mobility, load, and individual proportions can materially change the result.

Geometry snapshot

Geometry comparison for Rieju MRT 125 SM AC and Rieju MRT 50 SM
SpecRieju MRT 125 SM ACRieju MRT 50 SM
Seat height870 mm870 mm
Wheelbase1,380 mm1,380 mm
Wet weight--
Displacement125 cc50 cc

Posture metrics

Knee angle

Rieju MRT 125 SM AC
Sport (57.9 deg)
Rieju MRT 50 SM
Sport (57.9 deg)

Hip angle

Rieju MRT 125 SM AC
Neutral (95.5 deg)
Rieju MRT 50 SM
Neutral (95.5 deg)

Elbow angle

Rieju MRT 125 SM AC
Relaxed (143.3 deg)
Rieju MRT 50 SM
Relaxed (143.3 deg)

Torso lean

Rieju MRT 125 SM AC
Neutral (11.0 deg)
Rieju MRT 50 SM
Neutral (11.0 deg)