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MotoLibrary Score
34/100Commuter
Power/Weight
0.11 hp/kg
Engine
124 ccm
Technical Overview
2011 Hyosung RX125D SM Technical Analysis & Specification Breakdown
At the heart of the 2011 Hyosung RX125D SM super motard motorcycle, Hyosung relies on a 124 cc (7.6 cu in) oil & air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 13 HP (9.5 kW) at 10,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 104.8 HP per liter, the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the RX125D SM measures 123 kg (271 lbs) dry, translating to a power-to-weight ratio of 0.11 HP/kg (9.46 kg per horsepower). Rider ergonomics and chassis geometry center around a 840 mm (33.1 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,430 mm (56.3 in) wheelbase engineered for balanced agility and highway composure.
Specific Output
104.8 HP/L
Power-to-Weight
0.11 HP/kg (9.46 kg/HP)
Standover Height
840 mm (33.1 in)
Engine
Displacement124.0 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power13.0 HP (9.5 kW)) @ 10000 RPM
Fuel SystemCarburettor
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingOil & air
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Performance
Emission DetailsEuro 3
Chassis
Wheelbase1430 mm (56.3 inches)
Wheels & Brakes
Front Tyre110/70-17
Rear Tyre130/70-17
Dimensions & Weight
Dry Weight123.0 kg (271.2 pounds)
Power/Weight0.1057 HP/kg
Seat Height840 mm (33.1 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
