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Sportbikes

2003Aprilia RS 125 R

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The 2003 Aprilia RS 125 R is an entry-level sportbike designed for novice and younger riders seeking an affordable introduction to sport riding. Its light 115 kg dry weight and compact 805 mm seat height make it accessible and manageable, while the two-stroke single-cylinder engine delivers lively performance for training and spirited riding. Known for its aggressive styling, it remains a popular choice for learners moving into sport bikes.

Capacity
124.6 ccm
Engine
Single, two-stroke
Gearbox
Not on record
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Dry weight
115.0 kg
Seat height
805 mm
Power
28.0 HP (21.0 kW) @ 10500 RPM
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How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 40Agility 92Comfort 35Off-road 5Touring 20Road manners 75
Off-road & trail5%
Cornering90%
City riding65%
Daily riding40%
Touring20%
Two-up20%
Track80%
Best for
Designed for sharp, playful sport riding on twisty roads and track days rather than outright top speed.
Built for
A peppy two-stroke single that rewards revving hard and carrying corner speed over brute acceleration.
Not ideal for
Not a good choice for long-distance touring or carrying a passenger in comfort.

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 805mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2003 Aprilia RS 125 R, 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
124.6 ccm
Power
28.0 HP (21.0 kW) @ 10500 RPM
Engine type
Single, two-stroke
Power/weight ratio
0.2435 HP/kg (dry)
Starting
Electric
Torque
Not on record - add it
Transmission
Final drive
Chain
Clutch
Multiple discs, in oil bath
Dimensions & weight
Wheelbase
1345 mm
Seat height
805 mm
Dry weight
115.0 kg
Fuel capacity
14.00 litres
Reserve fuel capacity
3.50 litres
Brakes & wheels
Front brakes
Not on record - add it
Other
Color options
Black/Red, Black/Yellow
Comments
Listed power is the full-power version; a learner-restricted version rated 11 kW (15 hp) was also sold.

Specs last verified against published sources: .

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

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Common questions

What is the engine size of the Aprilia RS 125 R?

The 2003 Aprilia RS 125 R has a Capacity of 124.6 ccm (7.60 cubic inches).

What engine power does the Aprilia RS 125 R have?

The 2003 Aprilia RS 125 R has a Power of 28.0 HP (21.0 kW) @ 10500 RPM.

How much does the Aprilia RS 125 R weigh?

The 2003 Aprilia RS 125 R has a Dry weight of 115.0 kg (253.5 pounds).

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