Supermotos
2025Rieju Marathon 125 SM Pro
32 fields on record
The 2025 Rieju Marathon 125 SM Pro is a lightweight super motard designed for entry-level riders seeking versatile street and light off-road performance. Powered by a 15 HP Minarelli 4T engine with liquid cooling and fuel injection, it combines nimble handling with practical durability. Its detachable sub-chassis and steel perimeter frame make it ideal for customization and everyday commuting.
- Capacity
- 125.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 6-speed
- Dry weight
- 112.0 kg
- Seat height
- 876 mm
- Power
- 15.0 HP (10.9 kW)
What’s new for the 2025 Rieju Marathon 125 SM Pro
vs the 2024| Spec | 2024 | 2025 |
|---|---|---|
| Torque | 10.0 Nm (1.0 kgf-m or 7.4 ft.lbs) | not listed |
| Dry weight | 121.0 kg (266.8 pounds) | 112.0 kg (246.9 pounds) |
| Fuel capacity | 6.30 litres (1.66 US gallons) | 6.00 litres (1.59 US gallons) |
| Front brakes | Single disc. Double piston caliper. Galfer wave disk. | Single disc. Galfer wave disc with double piston caliper |
| Rear brakes | Single disc. Galfer wave disk. | Single disc. Galfer Wave |
| Cooling | Air | Liquid |
How it rides
Editorial estimate from the spec sheet - not lab tested- 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?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 125.0 ccm
- Power
- 15.0 HP (10.9 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.1339 HP/kg (dry)
- Bore x stroke
- 52.0 x 58.7 mm
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Valves per cylinder
- 4
- Lubrication system
- Separate mixture
- Torque
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
Dimensions & weight
- Wheelbase
- 1380 mm
- Overall length
- 2148 mm
- Overall width
- 800 mm
- Overall height
- 1145 mm
- Seat height
- 876 mm
- Dry weight
- 112.0 kg
- Fuel capacity
- 6.00 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. 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
- 100/80-17
- Rear tyre
- 130/70-17
Other
- Color options
- Black/white/red, black/red
- Comments
- Spanish brand.
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 | 2025 | 2026 |
|---|---|---|---|---|---|---|
| Capacity | 125 cc | 125 cc | 125 cc | 125 cc | 125 cc | 125 cc |
| Dry weight | 95 kg | 95 kg | 121 kg | 121 kg | 112 kg | 112 kg |
| Seat height | 870 mm | 870 mm | 870 mm | 870 mm | 876 mm | 876 mm |
| Fuel capacity | 6.3 L | 6.3 L | 6.3 L | 6.3 L | 6 L | 6 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Rieju Marathon 125 SM Pro?
The 2025 Rieju Marathon 125 SM Pro has a Capacity of 125.0 ccm (7.63 cubic inches).
What engine power does the Rieju Marathon 125 SM Pro have?
The 2025 Rieju Marathon 125 SM Pro has a Power of 15.0 HP (10.9 kW).
How many gears does the Rieju Marathon 125 SM Pro have?
The 2025 Rieju Marathon 125 SM Pro has a Gearbox of 6-speed.
How much does the Rieju Marathon 125 SM Pro weigh?
The 2025 Rieju Marathon 125 SM Pro has a Dry weight of 112.0 kg (246.9 pounds).
Shop this bike
Affiliate linksWe may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.
Please log in or register if you'd like to leave a comment.
Own one? Add it to My Garage and write an owner review with an Owner badge.