Rieju RS1 Castrol - 2005 Specifications and Reviews

The 2005 Rieju RS1 Castoral is a compact 50cc sport bike designed for young riders and learners seeking affordable performance. Powered by a liquid-cooled single-cylinder engine with 9 horsepower, it delivers sporty handling in a nimble package ideal for urban commuting and training purposes.

2005
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Engine and Transmission Specifications

Gearbox6-speed
Cooling systemLiquid
Lubrication systemAutomix
StarterElectric
Fuel systemCarburettor. Dell´ortho HSA
Bore x stroke39.0 x 40.3 mm (1.5 x 1.6 inches)
Compression12.0:1
Power9.00
Stroke2
Engine typeSingle cylinder
Capacity:50.00 ccm (3.05 cubic inches)
 
 

Physical measures and capacities

Overall width630 mm (24.8 inches)
Overall length1,855 mm (73.0 inches)

Rieju RS1 Castrol dimensions and frame

Rear brakes diameter200 mm (7.9 inches)
Rear brakesSingle disc
Front brakes diameter260 mm (10.2 inches)
Front brakesSingle disc
Rear tyre dimensions120/80-16
Front tyre dimensions90/90-16
Frame typeDouble cradle steel tube.

Speed and acceleration

Color optionsRed/white
Fuel capacity9.00 litres (2.38 gallons)

CategorySport
Year2005
ModelRieju RS1 Castrol
 
 

Other specs

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

Performance Profile & Rider Fit

9 hp
Peak Power

Best For

Track40%
City65%
Cornering60%
Daily Riding40%
Touring15%
Passenger10%

Rider Profile

Best ForThis is a 50cc sport-styled minibike best suited to beginners, learners, or younger riders taking their first steps into motorcycling.
PurposeIt's designed as an entry-level sport mini-moto for short urban hops, learning to ride, and playful cornering practice rather than any serious performance riding.
Rider FitIts small dimensions and low weight class make it easy to handle for smaller or lighter riders, including teenagers.
CharacterThe bike has a sporty, race-replica look with a peppy little two-stroke engine that rewards revving and quick gear changes despite its modest output.
Not Ideal ForIt is not for taller, heavier adults, highway commuting, touring, or anyone expecting real straight-line speed or long-distance comfort.

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

Rider Reviews

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