Rieju MRX 125 - 2006 Specifications and Reviews

The 2006 Rieju MRX 125 is a lightweight motocross bike designed for amateur and beginner riders seeking entry-level off-road performance. Its air-cooled single-cylinder four-stroke engine and sturdy steel frame provide reliable, straightforward handling on dirt tracks and trails. Best known for affordable, accessible motocross competition capability with responsive suspension and manageable power delivery.

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General information

CategoryCross / motocross
Year2006
ModelRieju MRX 125
 
 

Engine and Transmission Specifications

Transmission type,final driveChain
Gearbox5-speed
Cooling systemAir
Fuel systemCarburettor. Dell´Orto SHA 14/12
Bore x stroke54.0 x 54.0 mm (2.1 x 2.1 inches)
Engine typeSingle cylinder, four-stroke
Capacity:124.00 ccm (7.57 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakes diameter200 mm (7.9 inches)
Rear brakesSingle disc
Front brakes diameter260 mm (10.2 inches)
Front brakesSingle disc. Double piston
Rear tyre dimensions120/80-18
Front tyre dimensions90/90-21
Rear suspensionMonoShock Absorder Progressive System (PRS)
Front suspensionFork Ø 35 mm
Frame typePerimetral of double beam in steel of high resistance

Physical measures and capacities

Fuel capacity7.40 litres (1.96 gallons)
Wheelbase1,332 mm (52.4 inches)
Overall length2,020 mm (79.5 inches)
Seat height900 mm (35.4 inches) If adjustable, lowest setting.
Dry weight107.0 kg (235.9 pounds)

Other specs

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

Performance Profile & Rider Fit

Best For

Track20%
City35%
Cornering55%
Daily Riding30%
Touring20%
Passenger10%

Rider Profile

Best ForBest suited to riders with at least some prior two-wheel experience, as the tall seat height and light, flickable chassis reward confident bike control.
PurposeBuilt for trail riding, technical off-road tracks, and light enduro use rather than sustained road speed or highway travel.
Rider FitThe tall 900mm seat height and narrow, lightweight frame favor taller or more agile riders comfortable standing on the pegs.
CharacterA nimble, no-frills dirt-focused single suited to riders who enjoy technical terrain over outright power or long-distance cruising.
Not Ideal ForNot a good fit for riders wanting highway comfort, passenger touring, or high-speed road performance.

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

Rider Fit Visualizer

2006 Rieju MRX 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 2006 Rieju MRX 125, with a cramped knee angle of around 80 degrees and an upright 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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