Supermotos

2024Rieju Marathon 125 SM Pro

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The 2024 Rieju Marathon 125 SM Pro is a lightweight super motard built for novice and intermediate riders seeking an agile, street-focused machine. Its 125cc single-cylinder four-stroke engine and compact chassis deliver nimble handling and fuel efficiency, making it ideal for urban commuting and weekend riding. Known for its robust steel frame and modern suspension components, this model balances affordability with contemporary performance.

Capacity: 125.0 ccm
Engine: Single, four-stroke
Gearbox: 6-speed
Dry weight: 121.0 kg
Seat height: 870 mm
Power: 15.0 HP (11.0 kW)

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What’s new for the 2024 Rieju Marathon 125 SM Pro

vs the 2023

Spec	2023	2024
Torque	11.0 Nm (1.1 kgf-m or 8.1 ft.lbs) @ 8000 RPM	10.0 Nm (1.0 kgf-m or 7.4 ft.lbs)

Other years 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail15%

Cornering82%

City riding80%

Daily riding55%

Touring20%

Two-up25%

Track55%

Best for: Designed for flickable urban riding and sharpened cornering fun rather than outright speed or distance covering.
Built for: A nimble, high-revving small-bore supermoto that rewards an energetic, momentum-focused riding style.
Not ideal for: Not a good match for riders wanting sustained highway speeds, long-distance touring comfort, or serious off-road 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?

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Your height

Inseam (optional)

Units

At 870mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with tip-toe one foot on the 2024 Rieju Marathon 125 SM Pro, with a relaxed knee angle of around 135 degrees and a forward-leaning 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)
Torque: 10.0 Nm (1.0 kgf-m)
Engine type: Single, four-stroke
Power/weight ratio: 0.1240 HP/kg (dry)
Bore x stroke: 52.0 x 58.6 mm
Cooling system: Air
Fuel system: Injection
Starting: Electric
Valves per cylinder: 4

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain

Dimensions & weight

Wheelbase: 1380 mm
Overall length: 2070 mm
Overall width: 800 mm
Overall height: 1145 mm
Seat height: 870 mm
Dry weight: 121.0 kg
Fuel capacity: 6.30 litres

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. Double piston caliper. Galfer wave disk.
Front brakes diameter: 300 mm
Rear brakes: Single disc. Galfer wave disk.
Rear brakes diameter: 200 mm
Front tyre: 100/80-17
Rear tyre: 130/70-17

Other

Color options: Black/red, white/red
Comments: Spanish brand.

Specs last verified against published sources: October 2026.

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	2017	2019	2022	2024	2026
Capacity	125 cc	125 cc	125 cc	125 cc	125 cc
Dry weight	95 kg	95 kg	121 kg	121 kg	112 kg
Seat height	870 mm	870 mm	870 mm	870 mm	876 mm
Fuel capacity	6.3 L	6.3 L	6.3 L	6.3 L	6 L