Segment:
Lightweight sport motorcycle (125cc class equivalent for licensing in many regions).
Target Audience:
Young riders, commuting, entry-level sportbike enthusiasts.
Key Competitors:
Yamaha YZF-R125, Honda CBR125R, Kawasaki Ninja 125, Suzuki GSX-R125.
Design Philosophy:
Sportbike styling derived from larger Aprilia motorcycles, sharp lines, aggressive riding posture.
Performance Focus:
Agile handling, responsive engine, and sporty aesthetics appealing to performance-minded beginners.
Engine:
Engine overhaul, disassembly, assembly, lubrication, cooling system, fuel system, ignition system, exhaust system.
Transmission:
Gearbox operation, maintenance, troubleshooting, clutch, shifter mechanism.
Chassis:
Frame, suspension (front forks, rear shock absorber), steering system, wheels, tires, brakes (front and rear).
Electrical:
Wiring diagrams, lighting system, battery, starter, ignition system, instrument panel, indicators.
Bodywork:
Fairings, seat, fuel tank, fenders, handlebars, controls.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain adjustment, brake pad replacement, spark plug service.
Troubleshooting:
Diagnostic procedures for common problems, electrical faults, engine performance issues.
Repair:
Step-by-step repair instructions for all major components and systems, including engine rebuilds and suspension overhauls.
Diagnostic Capabilities:
Detailed diagnostic charts, fault code interpretation (if applicable), and systematic troubleshooting flows.
Component Rebuilds:
Complete disassembly and reassembly instructions for engine, gearbox, and suspension components.
Specifications Data:
Tightening torques, fluid capacities, clearances, timing settings, and other critical technical data.
Digital Format:
PDF (Portable Document Format)
Readability:
High-resolution scans with clear text and legible diagrams, optimized for digital viewing and printing.
Binding:
Not applicable (Digital PDF)
Paper Quality:
Not applicable (Digital PDF)
Text Search:
Searchable PDF text for quick information retrieval.
Engine Type:
Single-cylinder, 2-stroke, liquid-cooled.
Displacement:
49.7 cc (cubic centimeters)
Bore X Stroke:
39.86 mm x 40 mm
Power Output:
Approx. 8.4 kW (11.2 hp) @ 9,750 rpm (EU homologation limits may apply).
Torque Output:
Approx. 7.9 Nm (5.8 lb-ft) @ 9,500 rpm.
Compression Ratio:
10.5:1 (typical for this engine).
Top Speed:
Limited by engine size and regulations, typically around 60-70 mph (95-115 km/h).
Fuel Delivery:
Carburetor (e.g., Dell'Orto PHBN 17.5).
Fuel Type:
Unleaded gasoline (RON 95 or higher recommended).
Oil Mixture:
Pre-mix or separate oil injection system for 2-stroke oil.
2-Stroke Oil Type:
High-quality 2-stroke synthetic or semi-synthetic oil meeting JASO FD or API TC specifications.
Coolant Type:
Ethylene glycol-based antifreeze/coolant with corrosion inhibitors (50% mixture with distilled water recommended).
Length:
Approx. 1,980 mm (77.95 in)
Width:
Approx. 720 mm (28.35 in)
Height:
Approx. 1,130 mm (44.49 in)
Wheelbase:
Approx. 1,350 mm (53.15 in)
Seat Height:
Approx. 805 mm (31.69 in)
Dry Weight:
Approx. 120 kg (264.55 lbs)
Gross Vehicle Weight Rating:
Refer to vehicle compliance plate, typically around 280 kg.
Crash Test Results:
Not typically rated by consumer safety organizations like NHTSA or Euro NCAP for this class of vehicle.
Braking System:
Hydraulic disc brakes front and rear (e.g., 260mm front disc, 220mm rear disc).
Tire Specifications:
Tubeless tires: Front 110/70-17, Rear 130/70-17 (typical sizes, consult manual for exact specs).
Lighting:
Halogen headlight, LED taillight and indicators.
Infotainment System:
Basic instrument cluster: speedometer, tachometer, odometer, engine temperature warning light, neutral indicator.
Driver Assistance Features:
None in the modern automotive sense.
Connectivity Options:
None.
Oil Change Engine:
Every 3,000-4,000 km or annually. Refer to manual for exact interval.
Spark Plug Service:
Inspect every 2,000 km, replace as needed.
Air Filter Service:
Clean or replace every 4,000-6,000 km or as needed based on operating conditions.
Chain Lubrication Adjustment:
Lubricate every 500-800 km, check tension at same interval.
Transmission Oil Type:
SAE 75W/90 gear oil (API GL-4 or GL-5 specification, consult manual for exact type).
Brake Fluid Type:
DOT 4 hydraulic brake fluid.
Coolant Type:
Ethylene glycol-based coolant (50% mixture with distilled water).
Common Problems:
Potential for carburetor tuning issues, 2-stroke engine wear if not properly maintained, electrical connector corrosion.
Preventative Maintenance:
Regular cleaning of air filter, proper 2-stroke oil mix, timely chain maintenance, and checking electrical connections are crucial.
Manufacturer:
Aprilia is an Italian manufacturer known for its performance-oriented motorcycles, particularly in racing and sportbike segments.
Rs50 Lineage:
The RS50 has a long history of being Aprilia's entry-level sportbike, designed to offer the styling and feel of larger Aprilia sportbikes.
Generation Overview:
The 2009 model is part of a generation that saw significant updates in styling and chassis dynamics, often featuring aluminum frame construction.
Manufacturing Location:
Primarily Italy (historically Aprilia's production base).
