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Enduro Bikes

2018Rieju Marathon 125 PRO

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The 2018 Rieju Marathon 125 PRO is a 125cc enduro bike made in Spain with high-spec suspension. Its liquid-cooled 125cc single makes 15 hp through a six-speed gearbox and chain. An 890 mm seat, 121 kg dry weight and 6.3-litre tank suit learners who want real off-road ability.

Capacity
125.0 ccm
Engine
Single, four-stroke
Gearbox
6-speed
Dry weight
121.0 kg
Seat height
890 mm
Power
15.0 HP (10.9 kW)
⇄ Compare with another bike + Add to garage All model years
Other years 2010 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 12Agility 80Comfort 40Off-road 85Touring 25Road manners 35
Off-road & trail85%
Cornering55%
City riding45%
Daily riding40%
Touring20%
Two-up15%
Track15%
Best for
It is built primarily for trail riding, technical enduro tracks, and low-speed off-road exploration rather than any kind of speed or highway work.
Built for
It 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 for
It is not suited to riders wanting sustained highway speeds, long-distance touring comfort, or carrying a passenger any real distance.

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 890mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2018 Rieju Marathon 125 PRO, 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 (10.9 kW)
Engine type
Single, four-stroke
Power/weight ratio
0.1240 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
6-speed
Transmission type
Manual
Final drive
Chain
Dimensions & weight
Wheelbase
1405 mm
Overall length
2070 mm
Overall width
800 mm
Overall height
1165 mm
Seat height
890 mm
Dry weight
121.0 kg
Fuel capacity
6.30 litres
Ground clearance
Not on record - add it
Chassis & suspension
Frame
Highly resistant double cradle steel perimeter. Detachable rear sub-chassis.
Front suspension
R16V inverted fork of Ø40mm.
Rear suspension
Gas Mono-shock shock absorber and seaprate bottle PRS system
Brakes & wheels
Front brakes
Single disc. Galfer wave disc with double piston caliper
Front brakes diameter
300 mm
Rear brakes
Single disc. Galfer Wave
Rear brakes diameter
200 mm
Front tyre
90/90-21
Rear tyre
120/80-18
Other
Color options
Black, white
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 201020162018201920232026
Capacity 125 cc 125 cc 125 cc 125 cc 125 cc 125 cc
Dry weight 108 kg 121 kg 121 kg 121 kg 121 kg 112 kg
Seat height 900 mm 890 mm 890 mm 890 mm 890 mm 896 mm
Fuel capacity 6.3 L 6.3 L 6.3 L 6.3 L 6.3 L 6 L

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

Rider Reviews

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Common questions

What is the engine size of the Rieju Marathon 125 PRO?

The 2018 Rieju Marathon 125 PRO has a Capacity of 125.0 ccm (7.63 cubic inches).

What engine power does the Rieju Marathon 125 PRO have?

The 2018 Rieju Marathon 125 PRO has a Power of 15.0 HP (10.9 kW).

How many gears does the Rieju Marathon 125 PRO have?

The 2018 Rieju Marathon 125 PRO has a Gearbox of 6-speed.

How much does the Rieju Marathon 125 PRO weigh?

The 2018 Rieju Marathon 125 PRO has a Dry weight of 121.0 kg (266.8 pounds).

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