Positioned in Rieju's cross - motocross motorcycle lineup, the 2005 Rieju 50 MRX Castrol pairs a 50 cc (3.1 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 8 HP (5.8 kW), transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 160 HP per liter, the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.
Rider ergonomics and chassis geometry center around a 1,332 mm (52.4 in) wheelbase engineered for quick, flickable steering geometry. The 8.4-liter (2.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
160 HP/L
Engine
Displacement50.0 ccm (3.05 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power8.0 HP (5.8 kW))
Compression12.0:1
Bore x Stroke39.0 x 40.3 mm (1.5 x 1.6 inches)
Fuel SystemCarburettor. Dell´ortho PHBN 14-12
LubricationAutomix
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Performance
ExhaustAluminum silencer
Chassis
Frame TypePerimetral of double beam in steel.
Front SuspensionShowa advantage with inverted bracket
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
