Rieju MRX 50 Pro - 2006 Specifications and Reviews

The 2006 Rieju MRX 50 Pro is a lightweight enduro machine designed for entry-level off-road riders and younger enthusiasts. Its compact 50cc single-cylinder engine and manageable 94kg weight make it ideal for learning trail riding skills and navigating technical terrain. Known for its affordability and reliability, this Spanish-built enduro excels in amateur competition and recreational off-road riding.

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Engine and Transmission Specifications

Gearbox6-speed
Cooling systemLiquid
StarterKick
Fuel systemCarburettor. Dell´Orto PHBN 16
Bore x stroke40.3 x 39.0 mm (1.6 x 1.5 inches)
Stroke2
Engine typeSingle cylinder
Capacity:50.00 ccm (3.05 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,332 mm (52.4 inches)
Overall length2,050 mm (80.7 inches)
Seat height920 mm (36.2 inches) If adjustable, lowest setting.
Dry weight94.0 kg (207.2 pounds)

Rieju MRX 50 Pro dimensions and frame

Exhaust systemWith Catalyst
Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc
Front brakes diameter260 mm (10.2 inches)
Front brakesSingle disc
Rear tyre dimensions110/80-18
Front tyre dimensions80/90-21
Rear suspensionMonoshock Absorder Progressive System
Front suspensionUpside Down Front Fork
Frame typePerimetral of double beam in steel of high resistance
 
 

Speed and acceleration

Fuel capacity8.40 litres (2.22 gallons)

CategoryEnduro / offroad
Year2006
ModelRieju MRX 50 Pro

Other specs

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

Performance Profile & Rider Fit

Best For

Track15%
City30%
Cornering45%
Daily Riding20%
Touring10%
Passenger5%

Rider Profile

Best ForThis 50cc enduro is best suited to young or beginner riders learning off-road basics rather than experienced riders seeking performance.
PurposeIt is designed as a lightweight, small-displacement trail and learner bike for off-road play rather than any serious speed or distance work.
Rider FitThe tall 920mm seat height combined with a very light dry weight makes it manageable for smaller or lighter riders despite the enduro stance.
CharacterIt has the nimble, playful character typical of small two-stroke enduros, with quick handling but very limited outright power.
Not Ideal ForIt is not suitable for highway travel, two-up riding, or anyone expecting real touring range or top-end speed.

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

Rider Fit Visualizer

2006 Rieju MRX 50 Pro Rider Ergonomics Assessment

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Feet:

At 920mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2006 Rieju MRX 50 Pro, 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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