Segment:
High-performance lightweight sportbike
Target Audience:
Enthusiasts and owners seeking to maintain and repair their Aprilia RS250
Competitors:
Suzuki RGV250, Yamaha TZR250, Kawasaki KR-1S
Engine Design:
Two-stroke V-twin engine derived from Suzuki RGV250 components
Handling:
Renowned for sharp handling and race-inspired chassis dynamics
Performance:
Strong power-to-weight ratio and exhilarating acceleration
Engine:
Complete engine assembly, disassembly, tuning, and diagnostics
Fuel System:
Carburetor service (Mikuni TM28SS), fuel pump, fuel lines, fuel tank
Ignition System:
CDI, ignition coils, spark plugs, timing adjustments
Cooling System:
Radiator, water pump, coolant flow, thermostat
Exhaust System:
Expansion chambers, mufflers, gaskets
Transmission:
Gearbox assembly, clutch operation (wet multi-plate), gear shifting mechanism
Drivetrain:
Chain and sprockets maintenance and replacement
Brakes:
Front and rear brake systems (calipers, master cylinders, lines, pads, rotors)
Suspension:
Front telescopic forks (adjustable), rear monoshock (adjustable), linkage
Steering:
Steering head bearings, handlebar assembly
Electrical System:
Wiring diagrams, lighting, battery, charging system, starter motor
Chassis Frame:
Frame inspection, alignment checks
Bodywork:
Fairing removal and installation, seat, fuel tank paneling
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain lubrication
Troubleshooting:
Diagnostic procedures for common issues and system malfunctions
Repair:
Detailed step-by-step instructions for component repair and replacement
Rebuilds:
Engine, transmission, and suspension component rebuild procedures
Adjustments:
Carburetor synchronization, ignition timing, suspension sag, clutch play
Specifications Torque:
Torque specifications for all critical fasteners
Depth:
In-depth technical coverage suitable for professional mechanics and experienced DIY enthusiasts
Diagnostics:
Advanced diagnostic information, including fault codes (if applicable) and systematic troubleshooting guides
Rebuild Manuals:
Includes procedures for complete engine and gearbox rebuilds
Type:
Liquid-cooled, 2-stroke, V-twin
Displacement:
249 cc (249.02 cc)
Bore X Stroke:
54 mm x 54.5 mm
Valves Per Cylinder:
Reed valve induction
Horsepower:
Approx. 70-75 HP (at crankshaft, depending on market regulations and tuning)
Torque:
Approx. 38 Nm (28 lb-ft) @ 8,000 rpm
Carburetors:
2 x Mikuni TM28SS flat-slide carburetors
Fuel Delivery:
Fuel pump with auto-lube (mixture oil injection system)
Ignition Type:
Digital CDI
Certification:
N/A (Motorcycle safety ratings differ from cars)
Brakes:
Dual front discs (320mm), single rear disc (230mm) with twin-piston calipers ( Nissin)
Tires:
Sport-oriented tire compounds
Frame:
Aluminum twin-spar frame for rigidity and rider feedback
Lighting:
Halogen headlight, LED taillight
Oil Change:
Every 3,000-5,000 km (1,800-3,100 miles) or annually
Spark Plugs:
Inspect every 5,000 km (3,100 miles), replace as needed (NGK BR9EG recommended)
Air Filter:
Clean or replace every 5,000 km (3,100 miles)
Chain Lubrication:
Every 500-750 km (300-450 miles) and after washing/rain
Coolant Flush:
Every 2 years or 20,000 km (12,500 miles)
Engine Oil Type:
2-stroke pre-mix oil (specific recommendations vary, e.g., Motul 800 2T Factory Line) or Auto-lube injection oil
Coolant:
Ethylene glycol-based coolant (50/50 mix with distilled water)
Common Problems:
Potential for power valve issues, reed valve wear, and clutch wear due to aggressive riding. Carburetor synchronization critical for smooth running.
Maintenance Tip:
Regular cleaning and adjustment of the Mikuni carburetors are crucial for optimal performance.
Heritage:
Aprilia is an Italian manufacturer with a strong racing pedigree, particularly in Grand Prix motorcycle racing.
Origin:
The RS250 was developed in collaboration with Suzuki, utilizing the engine and many chassis components from the highly successful Suzuki RGV250 Gamma.
Key Years:
Introduced in 1995, the 1996 model is part of the early production run. Later models received updates.
Manufacturing Location:
Italy
