Naked Motorcycles
2020Rieju Century
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The 2020 Rieju Century is a retro-styled 125cc naked bike for learner riders who want classic looks. Its liquid-cooled single makes 15 hp and 12.3 Nm, with a 790 mm seat.
- Capacity
- 125.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 135.0 kg
- Seat height
- 790 mm
- Power
- 15.0 HP (11.0 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built as a light, low-displacement machine intended for learner-friendly street use, short commutes, and casual weekend rides rather than outright performance.
- Built for
- It has a simple, honest, retro-tinged personality with modest power delivery that rewards smooth, relaxed riding rather than aggressive throttle use.
- Not ideal for
- This is not the right bike for riders wanting high-speed touring, motorway overtaking confidence, 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 (11.0 kW)
- Torque
- 12.3 Nm (1.3 kgf-m) @ 7500 RPM
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.1111 HP/kg (dry)
- Bore x stroke
- 58.0 x 47.0 mm
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Valves per cylinder
- 2
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
Dimensions & weight
- Wheelbase
- 1360 mm
- Overall length
- 2025 mm
- Overall width
- 785 mm
- Overall height
- 1070 mm
- Seat height
- 790 mm
- Dry weight
- 135.0 kg
- Fuel capacity
- 9.50 litres
Chassis & suspension
- Frame
- High strength steel tubular
- Front suspension
- Telescopic fork
- Rear suspension
- Dual shocks with preload reservoirs
Brakes & wheels
- Front brakes
- Single disc. Disc Wave
- Front brakes diameter
- 280 mm
- Rear brakes
- Single disc. Disc Wave
- Front tyre
- 100/90-118
- Rear tyre
- 130/80-17
Other
- Color options
- Black, Grey
Specs last verified against published sources: .
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 | 2019 | 2020 | 2021 | 2023 | 2024 | 2026 |
|---|---|---|---|---|---|---|
| Capacity | 125 cc | 125 cc | 125 cc | 125 cc | 125 cc | 125 cc |
| Dry weight | 135 kg | 135 kg | 135 kg | 135 kg | 135 kg | 135 kg |
| Seat height | 790 mm | 790 mm | 790 mm | 790 mm | 790 mm | 790 mm |
| Fuel capacity | 9.5 L | 9.5 L | 9.5 L | 9.5 L | 9.5 L | 9.5 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 Century?
The 2020 Rieju Century has a Capacity of 125.0 ccm (7.63 cubic inches).
What engine power does the Rieju Century have?
The 2020 Rieju Century has a Power of 15.0 HP (11.0 kW).
How many gears does the Rieju Century have?
The 2020 Rieju Century has a Gearbox of 5-speed.
What is the torque of the Rieju Century?
The 2020 Rieju Century has a Torque of 12.3 Nm (1.3 kgf-m or 9.1 ft.lbs) @ 7500 RPM.
How much does the Rieju Century weigh?
The 2020 Rieju Century has a Dry weight of 135.0 kg (297.6 pounds).
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