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Enduro Bikes

2013Rieju Marathon 125

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The 2013 Rieju Marathon 125 is a lightweight enduro bike designed for amateur off-road riders seeking an affordable entry into trail riding. Its liquid-cooled four-stroke single-cylinder engine delivers reliable performance across varied terrain, while the steel perimeter frame and quality suspension components provide durability and control. Best known for offering excellent value and easy handling characteristics suitable for learning enduro skills.

Capacity
125.0 ccm
Engine
Single, four-stroke
Gearbox
5-speed
Dry weight
107.6 kg
Seat height
900 mm
Power
15.0 HP (11.0 kW)
⇄ Compare with another bike + Add to garage All model years

What’s new for the 2013 Rieju Marathon 125

vs the 2012
Spec20122013
Gearbox 6-speed 5-speed
Front suspension PAIOLI fork of 37mm. Fork of Ø36mm.
Other years 2010 2011 2012 2013

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 20Agility 82Comfort 35Off-road 80Touring 25Road manners 30
Off-road & trail80%
Cornering55%
City riding45%
Daily riding35%
Touring20%
Two-up10%
Track15%
Best for
Designed primarily for enduro and offroad trail riding rather than speed or long-distance road use.
Built for
A nimble, playful lightweight trail bike that rewards active riding style and skilled low-speed control over raw power.
Not ideal for
Not a good fit for riders wanting highway speed, passenger comfort, or long-distance touring capability.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

Worked out in your browser - nothing is sent to us
At 900mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2013 Rieju Marathon 125, with a cramped knee angle of around 80 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 821-900 mm — Long Legs →

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Full specifications

Engine
Capacity
125.0 ccm
Power
15.0 HP (11.0 kW)
Engine type
Single, four-stroke
Power/weight ratio
0.1394 HP/kg (dry)
Bore x stroke
52.0 x 58.6 mm
Cooling system
Liquid
Fuel system
Carburettor
Starting
Electric
Valves per cylinder
4
Torque
Not on record - add it
Transmission
Gearbox
5-speed
Transmission type
Manual
Final drive
Chain
Dimensions & weight
Wheelbase
1395 mm
Overall length
2150 mm
Overall width
800 mm
Overall height
1200 mm
Seat height
900 mm
Dry weight
107.6 kg
Fuel capacity
6.30 litres
Ground clearance
Not on record - add it
Chassis & suspension
Frame
Double cradle. Highly resistant steel perimeter
Front suspension
Fork of Ø36mm.
Rear suspension
Mono-shock
Brakes & wheels
Front brakes
Single disc. 2-piston
Front brakes diameter
300 mm
Rear brakes
Single disc
Rear brakes diameter
200 mm
Front tyre
80/90-21
Rear tyre
110/80-18
Other
Color options
White, black
Comments
Spanish made bike.

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted
Specification 2010201120122013
Capacity 125 cc 125 cc 125 cc 125 cc
Dry weight 108 kg 108 kg 108 kg 108 kg
Seat height 900 mm 900 mm 900 mm 900 mm
Fuel capacity 6.3 L 6.3 L 6.3 L 6.3 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

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Common questions

What is the engine size of the Rieju Marathon 125?

The 2013 Rieju Marathon 125 has a Capacity of 125.0 ccm (7.63 cubic inches).

What engine power does the Rieju Marathon 125 have?

The 2013 Rieju Marathon 125 has a Power of 15.0 HP (11.0 kW).

How many gears does the Rieju Marathon 125 have?

The 2013 Rieju Marathon 125 has a Gearbox of 5-speed.

How much does the Rieju Marathon 125 weigh?

The 2013 Rieju Marathon 125 has a Dry weight of 107.6 kg (237.2 pounds).

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