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Sportbikes

2003Aprilia RS 50

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The 2003 Aprilia RS 50 is a lightweight sport bike designed for young and novice riders seeking an accessible entry point into sportbike riding. Known for its agile handling and stylish Italian design, the RS 50 delivers authentic supersport aesthetics in a manageable package ideal for learners building foundational skills.

Capacity
49.7 ccm
Engine
Single, two-stroke
Gearbox
6-speed
Dry weight
89.0 kg
Seat height
810 mm
Power
5.4 HP (4.0 kW)
⇄ Compare with another bike + Add to garage All model years

What’s new for the 2003 Aprilia RS 50

vs the 2002
Spec20022003
Fuel capacity 12.20 litres (3.22 US gallons) 13.00 litres (3.43 US gallons)
Compression 12.0:1 11.8:1
Other years 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 7Agility 70Comfort 35Off-road 10Touring 20Road manners 65
Off-road & trail10%
Cornering80%
City riding75%
Daily riding45%
Touring15%
Two-up10%
Track55%
Best for
It's built for nimble, playful sport riding on twisty roads and around town rather than outright speed, thanks to its tiny two-stroke engine and sportbike ergonomics.
Built for
It has the look and handling feel of a proper sportbike shrunk down, with sharp steering and a lightweight chassis that rewards revving the small two-stroke engine hard.
Not ideal for
It's not the right choice for anyone needing real highway speed, long-distance comfort, or the ability to comfortably carry a passenger.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

Worked out in your browser - nothing is sent to us
At 810mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2003 Aprilia RS 50, with a cramped knee angle of around 70 degrees and a forward-leaning riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 751-820 mm — Middle Ground →

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Full specifications

Engine
Capacity
49.7 ccm
Power
5.4 HP (4.0 kW)
Engine type
Single, two-stroke
Power/weight ratio
0.0607 HP/kg (dry)
Bore x stroke
40.3 x 39.0 mm
Compression
11.8:1
Cooling system
Liquid
Fuel system
Carburettor
Starting
Electric
Ignition
Electronic, capacitor discharge
Lubrication system
Automatic mixer
Torque
Not on record - add it
Transmission
Gearbox
6-speed
Transmission type
Manual
Final drive
Chain
Clutch
Multiplate wet clutch with slipper system
Dimensions & weight
Wheelbase
1280 mm
Overall length
1898 mm
Overall width
640 mm
Overall height
1095 mm
Seat height
810 mm
Dry weight
89.0 kg
Wet weight
132.0 kg
Fuel capacity
13.00 litres
Reserve fuel capacity
2.50 litres
Chassis & suspension
Frame
Sloping twin spar in cast aluminium with thin walled structural shell and cross rib reinforcement
Front suspension
Aprilia 35 mm central pin hydraulic telescopic fork.
Rear suspension
Double member swinging arm in high strength steel with hydraulic monoshock,.
Front wheel travel
110 mm
Rear wheel travel
110 mm
Brakes & wheels
Front brakes
Single disc
Front brakes diameter
280 mm
Rear brakes
Single disc
Rear brakes diameter
220 mm
Front tyre
90/80-17
Rear tyre
110/80-17
Other
Color options
Black/Red

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted
Specification 199820032004201020152021
Capacity 50 cc 50 cc 50 cc 50 cc 50 cc 50 cc
Dry weight 91 kg 89 kg 89 kg 89 kg 89 kg 89 kg
Seat height 810 mm 810 mm 810 mm 815 mm 820 mm 820 mm
Fuel capacity 12.2 L 13 L 13 L 13 L 13 L 14.5 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

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Rider rating

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Common questions

What is the engine size of the Aprilia RS 50?

The 2003 Aprilia RS 50 has a Capacity of 49.7 ccm (3.03 cubic inches).

What engine power does the Aprilia RS 50 have?

The 2003 Aprilia RS 50 has a Power of 5.4 HP (4.0 kW).

How many gears does the Aprilia RS 50 have?

The 2003 Aprilia RS 50 has a Gearbox of 6-speed.

How much does the Aprilia RS 50 weigh?

The 2003 Aprilia RS 50 has a Dry weight of 89.0 kg (196.2 pounds).

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