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MotoLibrary Score
36/100Commuter
Power/Weight
0.13 hp/kg
Engine
125 ccm
Technical Overview
2013 Rieju Marathon 125 Pro SM Technical Analysis & Specification Breakdown
Built around Rieju's super motard motorcycle platform, the 2013 Rieju Marathon 125 Pro SM relies on a 125 cc (7.6 cu in) liquid-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 15 HP (10.9 kW), transferring power to the rear wheel through a 6-speed gearbox. With a specific output of 120 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 Marathon 125 Pro SM measures 115 kg (254 lbs) dry, translating to a power-to-weight ratio of 0.13 HP/kg (7.67 kg per horsepower). Rider ergonomics and chassis geometry center around a 870 mm (34.3 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,380 mm (54.3 in) wheelbase engineered for quick, flickable steering geometry. The 6.3-liter (1.7 US gal) fuel tank supports practical everyday commuting and weekend road stints.
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.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
