Aprilia RS 125 R - 2003 Specifications and Reviews

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 lightweight 142 kg frame and compact 805 mm seat height make it accessible and manageable, while the single-cylinder engine delivers sufficient power for training and casual commuting. Known for its aggressive styling and reliable performance, it remains a popular choice for learners transitioning into the sport bike category.

2003
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Replaced by the: Aprilia RS4 125

About the Aprilia RS 125 R

The 1999 Aprilia RS125 introduced more rounded fairings, five spoke wheels and a single air duct at the riders side. The pointed lip on the nose was also slightly exaggerated.

Power is provided by a liquid cooled two stroke single cylinder 125cc engine..

General information

CategorySport
Year2003
ModelAprilia RS 125 R

Engine and Transmission Specifications

Stroke2
Engine typeSingle cylinder
Capacity:124.60 ccm (7.60 cubic inches)

Physical measures and capacities

Wheelbase1,345 mm (53.0 inches)
Seat height805 mm (31.7 inches) If adjustable, lowest setting.
Dry weight142.0 kg (313.1 pounds)
 
 

Aprilia RS 125 R dimensions and frame

Color optionsBlack/Red, Black/Yellow
Reserve fuel capacity3.50 litres (0.92 gallons)
Fuel capacity14.00 litres (3.70 gallons)

Other specs

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

Performance Profile & Rider Fit

7.5s
0-60 mph (est.)

Best For

Track80%
City65%
Cornering90%
Daily Riding40%
Touring20%
Passenger20%

Rider Profile

Best ForBest suited to newer or younger riders, often as a stepping stone before moving to larger displacement sportbikes.
PurposeDesigned for sharp, playful sport riding on twisty roads and track days rather than outright top speed.
Rider FitIts light dry weight and compact dimensions make it easy to manage for smaller or less experienced riders.
CharacterA peppy two-stroke single that rewards revving hard and carrying corner speed over brute acceleration.
Not Ideal ForNot a good choice for long-distance touring or carrying a passenger in comfort.

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

Rider Fit Visualizer

2003 Aprilia RS 125 R Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 805mm, a rider of 175cm with a 79cm (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.

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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