Rieju Marathon 125 PRO - 2010 Specifications and Reviews

The 2010 Rieju Marathon 125 PRO is a lightweight street bike tailored for novice and commuter riders seeking practical everyday transportation. Its compact dimensions, 107.6 kg curb weight, and manageable 125cc engine make it ideal for urban navigation and fuel efficiency. The bike is distinguished by its responsive Galfer Wave braking system and reliable electric starter.

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General information

CategoryEnduro / offroad
Year2010
ModelRieju Marathon 125 PRO
 
 

Engine and Transmission Specifications

Exhaust systemRacing Muffler
Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Fuel systemCarburettor. Keihin CVEK 30
Valves per cylinder4
Bore x stroke52.0 x 58.6 mm (2.0 x 2.3 inches)
Engine typeSingle cylinder, four-stroke
Capacity:125.00 ccm (7.63 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakes diameter200 mm (7.9 inches)
Rear brakesSingle disc. Galfer Wave
Front brakes diameter300 mm (11.8 inches)
Front brakesSingle disc. Galfer Wave
Rear tyre dimensions120/80-18
Front tyre dimensions90/90-21
Rear suspensionGas Mono-shock shock absorber PRS system
Front suspensionMarzocchi fork of 40mm.
Frame typeDouble cradle. Highly resistant steel perimeter

Physical measures and capacities

Fuel capacity6.30 litres (1.66 gallons)
Wheelbase1,395 mm (54.9 inches)
Overall width800 mm (31.5 inches)
Overall length2,150 mm (84.6 inches)
Overall height1,200 mm (47.2 inches)
Seat height900 mm (35.4 inches) If adjustable, lowest setting.
Dry weight107.6 kg (237.2 pounds)
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsBlue, white
StarterElectric

Performance Profile & Rider Fit

15 hp
Peak Power

Best For

Track15%
City45%
Cornering55%
Daily Riding40%
Touring20%
Passenger15%

Rider Profile

Best ForThis bike suits newer or smaller riders and those wanting a light, unintimidating machine to build off-road skills, though its tall seat height demands reasonable inseam confidence.
PurposeIt is built primarily for trail riding, technical enduro tracks, and low-speed off-road exploration rather than any kind of speed or highway work.
Rider FitThe very low dry weight and slim chassis make it easy to muscle around, lift, and paddle through tricky terrain, but the tall seat height can challenge shorter riders.
CharacterIt has the character of a nimble, willing little enduro trail bike, eager to be flicked around obstacles but with only modest engine punch.
Not Ideal ForIt is not suited to riders wanting sustained highway speeds, long-distance touring comfort, or carrying a passenger any real distance.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2010 Rieju Marathon 125 PRO Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 900mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2010 Rieju Marathon 125 PRO, with a cramped knee angle of around 80 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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