User Rating: /5 · No user ratings yet✓ Your rating was saved
MotoLibrary Score
43/100Commuter
Power/Weight
0.2 hp/kg
Top Speed
155 km/h
Torque
19 Nm
Engine
125 ccm
Technical Overview
2003 Aprilia RS 125 R Technical Analysis & Specification Breakdown
Built around Aprilia's sport motorcycle platform, the 2003 Aprilia RS 125 R features a 124.8 cc (7.6 cu in) liquid-cooled single cylinder, two-stroke configuration. In factory specification, peak output is rated at 28.8 HP (21 kW) at 11,000 rpm while maximum torque reaches 18.7 Nm (13.8 lb-ft) at 10,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 230.8 HP per liter and a 1,000 rpm working window between peak torque (10,000 rpm) and peak power (11,000 rpm), the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.
On the scales, the RS 125 R measures 139 kg (306 lbs) wet (curb), translating to a power-to-weight ratio of 0.21 HP/kg (4.83 kg per horsepower). Rider ergonomics and chassis geometry center around a 805 mm (31.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,345 mm (53 in) wheelbase engineered for quick, flickable steering geometry. The 14-liter (3.7 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 155 km/h (96 mph).
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.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
