Segment:
        
        
            Lightweight Two-Stroke Sportbike
        
     
    
        
            Target Audience:
        
        
            Performance-oriented riders, track day enthusiasts, and classic sportbike collectors.
        
     
    
    
        
            Key Competitors 1994:
        
        
            Yamaha YZF600R, Kawasaki Ninja ZX-6, Suzuki GSX-R600 (though RS 250 occupied a niche)
        
     
    
        
            Unique Selling Proposition:
        
        
            Potent 250cc two-stroke V-twin engine, exceptional handling derived from Grand Prix racing technology, lightweight chassis.
        
     
    
    
        
            Engine Type:
        
        
            Liquid-cooled, 2-stroke, 90-degree V-twin
        
     
    
        
            Induction System:
        
        
            Reed valve induction, Twin Mikuni TM33SS carburetors
        
     
    
        
            Power Delivery:
        
        
            Vibrant mid-range and top-end powerband characteristic of two-stroke engines.
        
     
    
        
            Suspension Design:
        
        
            Telescopic front forks (often with adjustable preload and damping), Monoshock rear suspension.
        
     
    
        
            Braking System:
        
        
            Dual disc front brakes, single disc rear brake, often with prominent Brembo or similar high-performance components.
        
     
 
    
    
    
        
            Engine:
        
        
            Complete engine overhaul, top-end and bottom-end procedures, piston, cylinder, crankshaft, and gearbox disassembly/assembly.
        
     
    
        
            Fuel System:
        
        
            Carburetor (Mikuni T M33SS) disassembly, cleaning, adjustment, fuel tank, fuel pump, and fuel lines.
        
     
    
        
            Lubrication System:
        
        
            Oil injection system, oil pump, oil tank, and lubrication points.
        
     
    
        
            Cooling System:
        
        
            Radiator, coolant hoses, water pump, thermostat, and bleeding procedures.
        
     
    
        
            Electrical System:
        
        
            Ignition system, charging system (alternator, regulator/rectifier), battery, lighting, starter motor, and comprehensive wiring diagrams.
        
     
    
        
            Chassis:
        
        
            Frame inspection, suspension (front forks, rear shock absorber), steering system, wheel bearings, and swingarm.
        
     
    
        
            Brakes:
        
        
            Front and rear brake systems, caliper overhaul, master cylinder service, brake fluid replacement, and bleeding.
        
     
    
        
            Bodywork And Trim:
        
        
            Fairing removal and installation, seat, fuel tank mounting, and other body panels.
        
     
    
        
            Wheels And Tires:
        
        
            Tire replacement, wheel balancing, and spoke tensioning (if applicable).
        
     
    
    
        
            Maintenance:
        
        
            Periodic maintenance checks, fluid level checks, lubrication, filter replacement (air, oil - if applicable).
        
     
    
        
            Tune Up:
        
        
            Spark plug replacement and gapping, carburetor synchronization and adjustment, ignition timing checks.
        
     
    
        
            Repair And Rebuild:
        
        
            Detailed step-by-step instructions for component disassembly, inspection, repair, and reassembly for all major systems.
        
     
    
        
            Troubleshooting:
        
        
            Diagnostic procedures for common problems, fault finding based on symptoms.
        
     
    
        
            Specifications:
        
        
            Torque specifications for all fasteners, fluid capacities, tolerances, and adjustment specifications.
        
     
    
        
            Updates:
        
        
            Information on any service bulletins or updates applicable to the 1994 model.
        
     
    
    
        
            Depth:
        
        
            Comprehensive, from basic owner maintenance to complete engine and chassis rebuilds, suitable for professional technicians and experienced DIY mechanics.
        
     
 
    
    
    
        
            Engine Configuration:
        
        
            Liquid-cooled, 90-degree V-twin, two-stroke
        
     
    
    
        
            Bore X Stroke:
        
        
            54 mm x 54.5 mm (approximate, derived from RGV250)
        
     
    
        
            Compression Ratio:
        
        
            7.5:1 (approximate, can vary by market/tune)
        
     
    
        
            Cooling Method:
        
        
            Liquid-cooled
        
     
    
        
            Reed Block Design:
        
        
            Petal reed valves
        
     
    
    
        
            Horsepower:
        
        
            Approx. 65-70 HP (at crankshaft, depending on market restrictions)
        
     
    
        
            Torque:
        
        
            Approx. 35-38 Nm (at crankshaft)
        
     
    
        
            Redline:
        
        
            Approx. 11,500 - 12,000 RPM
        
     
    
    
        
            Carburetor Type:
        
        
            Twin Mikuni TM33SS flat-slide carburetors
        
     
    
        
            Fuel Delivery:
        
        
            Gravity feed with electric fuel pump (for crossover)
        
     
    
        
            Fuel Type:
        
        
            Unleaded gasoline (minimum 95 RON)
        
     
    
        
            Oil Injection:
        
        
            Automatic oil injection system
        
     
 
    
    
    
        
            Crash Test Results:
        
        
            N/A (Motorcycle)
        
     
    
    
        
            Braking Performance:
        
        
            Dual front disc brakes (e.g., 320mm) and rear disc brake, providing strong stopping power.
        
     
    
        
            Suspension Stability:
        
        
            Well-tuned suspension provides excellent road holding and stability.
        
     
    
        
            Lighting:
        
        
            Halogen headlight, taillight, and turn signals for visibility.
        
     
    
    
        
            Chassis Integrity:
        
        
            Robust twin-spar aluminum frame designed for rigidity and handling.
        
     
    
        
            Rider Ergonomics:
        
        
            Sportbike riding posture, which can be demanding but offers control.
        
     
 
    
    
    
        
            Infotainment System:
        
        
            N/A (Basic Sportbike Design)
        
     
    
    
        
            Driver Assistance Features:
        
        
            N/A (Emphasis on rider skill and feedback)
        
     
    
    
        
            Ignition System:
        
        
            Digital CDI ignition system with ignition timing adjustments.
        
     
    
        
            Power Valve Control:
        
        
            Mechanical operation of exhaust powervalves for broader power delivery.
        
     
 
    
    
    
        
            Oil Change Engine:
        
        
            Recommended at specified mileage intervals or as per manual, typically every few thousand miles for gearbox oil.
        
     
    
        
            Spark Plug Replacement:
        
        
            Recommended at intervals of 3,000-5,000 miles or annually.
        
     
    
        
            Air Filter Cleaning Replacement:
        
        
            Check and clean/replace every 3,000-5,000 miles, depending on operating conditions.
        
     
    
        
            Coolant Replacement:
        
        
            Recommended every 1-2 years.
        
     
    
        
            Chain Lubrication:
        
        
            Regularly, every 300-500 miles and after riding in wet conditions.
        
     
    
        
            Brake Fluid Replacement:
        
        
            Recommended every 1-2 years to maintain performance and prevent corrosion.
        
     
    
    
        
            Engine Oil Type:
        
        
            Two-stroke motorcycle oil, specifically for liquid-cooled, high-performance engines (e.g., Castrol TTS, Motul 710 2T or equivalent).
        
     
    
        
            Cooling Fluid Type:
        
        
            Mixture of distilled water and ethylene glycol-based antifreeze (typically 50/50 mix).
        
     
    
        
            Brake Fluid Type:
        
        
            DOT 4 (or DOT 5.1 if specified by manual for higher boiling point).
        
     
    
    
        
            Two Stroke Maintenance:
        
        
            Two-stroke engines require diligent maintenance, including proper oil mixing and attention to carbon buildup in exhaust ports and power valves.
        
     
    
        
            Power Valves:
        
        
            Mechanical power valves can seize if not properly cleaned and lubricated, impacting performance.
        
     
    
        
            Carburetor Tuning:
        
        
            Mikuni TM33SS carburetors require precise synchronization and jetting for optimal performance, especially at different altitudes or with aftermarket exhausts.
        
     
    
        
            Clutch Wear:
        
        
            Clutch plates can wear due to aggressive riding; regular inspection and replacement are necessary.
        
     
    
        
            Electrical Connections:
        
        
            As with many bikes of this era, electrical connections can be prone to corrosion or loosening; regular checks are advised.
        
     
 
    
    
    
        
            Brand Origins:
        
        
            Italian manufacturer with a strong racing pedigree, particularly in Grand Prix motorcycle racing.
        
     
    
    
        
            Development Basis:
        
        
            Heavily based on the Suzuki RGV250 Gamma, utilizing its engine and chassis design principles, with Aprilia modifications and styling.
        
     
    
        
            Significance:
        
        
            A highly acclaimed lightweight supersport that offered performance comparable to larger capacity bikes, known for its precise handling and rev-happy two-stroke engine.
        
     
    
        
            Model Line Introduction:
        
        
            The RS 250 was introduced in 1995, but the 1994 model year refers to the earliest production models, often considered the MK1 variant.
        
     
    
    
        
            Production Period:
        
        
            1995-2003 (with significant updates over the years)
        
     
    
        
            Manufacturing Location:
        
        
            Italy