Supermotos
2003Rieju SMX 50
31 fields on record
The 2003 Rieju SMX 50 is a lightweight super motard designed for young riders and beginners seeking an agile, nimble machine. Known for its compact 49cc single-cylinder engine delivering 8 horsepower, it excels in urban environments and tight handling maneuvers. Its manageable power and fuel-efficient design make it ideal for learners transitioning to street-oriented motorcycles.
- Capacity
- 49.0 ccm
- Engine
- Single
- Gearbox
- 6-speed
- Dry weight
- 94.5 kg
- Seat height
- 900 mm
- Power
- 8.0 HP (5.9 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Designed as a lightweight, fun supermoto-style mini bike for playful city riding and short sporty jaunts rather than serious performance.
- Built for
- A nimble, flickable little street bike with supermoto styling that rewards playful, energetic riding at low speeds.
- Not ideal for
- Not suitable for highway travel, long-distance touring, carrying a passenger comfortably, or riders seeking real straight-line speed.
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
- 49.0 ccm
- Power
- 8.0 HP (5.9 kW)
- Engine type
- Single
- Power/weight ratio
- 0.0847 HP/kg (dry)
- Bore x stroke
- 40.3 x 39.0 mm
- Compression
- 12.0:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Electric & kick
- Lubrication system
- Separated with automatic mixer
- Torque
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
Dimensions & weight
- Wheelbase
- 1332 mm
- Overall length
- 2050 mm
- Overall width
- 800 mm
- Overall height
- 1170 mm
- Seat height
- 900 mm
- Dry weight
- 94.5 kg
- Fuel capacity
- 8.40 litres
Chassis & suspension
- Frame
- Perimetral chassis (double beam).
- Front suspension
- Showa advantage with inverted bracket
- Rear suspension
- Showa
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 260 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 200 mm
- Front tyre
- 110/80-17
- Rear tyre
- 130/70-17
Other
- Color options
- Blue/Silver, Red/Black
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 | 2003 | 2004 | 2005 | 2006 | 2007 |
|---|---|---|---|---|---|
| Capacity | 49 cc | 49 cc | 50 cc | 50 cc | 50 cc |
| Dry weight | 95 kg | 95 kg | 95 kg | 95 kg | 95 kg |
| Seat height | 900 mm | 900 mm | 900 mm | 900 mm | 900 mm |
| Fuel capacity | 8.4 L | 8.4 L | 8.4 L | 8.4 L | 8.4 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 SMX 50?
The 2003 Rieju SMX 50 has a Capacity of 49.0 ccm (2.99 cubic inches).
What engine power does the Rieju SMX 50 have?
The 2003 Rieju SMX 50 has a Power of 8.0 HP (5.9 kW).
How many gears does the Rieju SMX 50 have?
The 2003 Rieju SMX 50 has a Gearbox of 6-speed.
How much does the Rieju SMX 50 weigh?
The 2003 Rieju SMX 50 has a Dry weight of 94.5 kg (208.3 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.