Rieju SMX 125 - 2008 Specifications and Reviews

The 2008 Rieju SMX 125 is a lightweight super motard designed for beginner and intermediate riders seeking an agile, nimble motorcycle. Its air-cooled single-cylinder engine and compact 107 kg frame deliver excellent maneuverability for urban riding and light off-road exploration. Known for its affordability and user-friendly character, it suits riders transitioning from scooters to sport-oriented machines.

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General information

CategorySuper motard
Year2008
ModelRieju SMX 125

Engine and Transmission Specifications

Gearbox5-speed
Cooling systemAir
Lubrication systemSeparate mixture
StarterElectric & kick
Fuel systemCarburettor. Mikuni VM20SS
Bore x stroke54.0 x 54.0 mm (2.1 x 2.1 inches)
Stroke4
Engine typeSingle cylinder
Capacity:125.00 ccm (7.63 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,332 mm (52.4 inches)
Seat height900 mm (35.4 inches) If adjustable, lowest setting.
Dry weight107.0 kg (235.9 pounds)

Rieju SMX 125 dimensions and frame

Exhaust systemMuffler
Rear brakes diameter200 mm (7.9 inches)
Rear brakesSingle disc
Front brakes diameter260 mm (10.2 inches)
Front brakesSingle disc
Rear tyre dimensions120/80-17
Front tyre dimensions100/80-17
Rear suspensionGas Mono-shock shock absorber PRS system
Front suspensionPaioli fork of 36mm.
Frame typeDouble cradle. Highly resistant steel perimeter
 
 

Speed and acceleration

Fuel capacity7.40 litres (1.96 gallons)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

Best For

Track45%
City80%
Cornering75%
Daily Riding55%
Touring20%
Passenger25%

Rider Profile

Best ForSuited to newer or younger riders who want a light, forgiving small-bore supermoto to build skills on before moving to bigger machines.
PurposeBuilt as a nimble, urban-friendly supermoto for weaving through traffic, flicking around back roads, and having fun rather than covering long distances quickly.
Rider FitThe low dry weight and 900mm seat height keep it manageable for shorter or lighter riders, though the tall-ish stance still requires reasonable inseam and confidence at a stop.
CharacterA cheeky, playful little street bike with sharp steering geometry and supermoto styling that rewards revving it hard and throwing it into corners.
Not Ideal ForNot for riders wanting sustained highway speed, long-distance touring comfort, or serious off-road capability given its road-biased 17 inch wheels and modest 125cc output.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2008 Rieju SMX 125 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 900mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2008 Rieju SMX 125, with a relaxed knee angle of around 135 degrees and a slightly forward riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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