🏷️ Basic Information Identification Make: Aprilia Model: SXV/RXV 450/550 Model Variant: SXV 450, SXV 550, RXV 450, RXV 550 Generation Generation Identifier: First Generation (2006 onwards) Codes Engine Codes: V990 (derived from V-twin family) 👋 Introduction Market Position Market Segment: High-performance supermoto and off-road/dual-sport motorcycles. Target Audience: Enthusiast owners, independent repair shops, experienced DIY mechanics. Competitive Analysis Key Competitors: KTM EXC/SMC series, Husqvarna SM/TE series, Beta RR/SM series. Key Features Model Philosophy: Aprilia's SXV/RXV line is renowned for its powerful V-twin engines and aggressive styling, blurring the lines between supermoto and off-road capabilities. Unique Selling Points: The V-twin engine configuration in a lightweight chassis provides a distinctive power delivery and performance character. 📋 Manual Details Coverage Areas Engine Coverage: Complete engine overhaul, top-end rebuild, bottom-end assembly, cooling system, lubrication system, fuel injection, ignition system, exhaust system. Chassis Coverage: Frame, suspension (front and rear), steering, brakes (hydraulic front and rear), wheels, tires, seat. Electrical Coverage: Wiring diagrams, lighting, battery, starter, charging system, ECU (Engine Control Unit) functions, sensors. Maintenance Coverage: Routine service, oil change intervals, filter replacement, chain adjustment, valve clearance checks, brake fluid service, coolant replacement. Troubleshooting Coverage: Diagnostic procedures for common issues, fault code interpretation (if applicable), systematic problem-solving guides. Page Count Estimated Page Count: Likely 300+ pages (typical for comprehensive service manuals) Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Systems: V-Twin liquid-cooled engine architecture, cylinder head assembly, piston and connecting rod service, crankshaft and bearing service, camshaft and valve train, fuel injection system (MAP, TPS, IAT sensors), ignition system (dual spark plugs), lubrication system (wet sump, oil pump), cooling system (radiator, fan, coolant flow). Transmission Systems: 6-speed sequential gearbox, clutch operation (hydraulic actuation), gear selection mechanism, transmission lubrication. Brakes Systems: Dual hydraulic disc front brakes (with potential for Brembo calipers), single hydraulic disc rear brake, brake fluid type and bleeding procedures, master cylinder and caliper service. Suspension Systems: Upside-down telescopic front forks (e.g., Marzocchi or Paioli), adjustable rear monoshock (e.g., Öhlins or Sachs), linkage system (if applicable), fork seal replacement, shock absorber service, spring preload adjustment. Electrical Systems: High-output alternator, battery specifications, starter motor circuit, headlight and taillight operation, indicator circuits, instrument cluster functions, ECU connector pinouts. Procedures Included Engine Procedures: Complete engine disassembly and reassembly, piston ring installation, valve seat grinding and lapping, timing chain/belt replacement (if applicable), injector cleaning and testing, spark plug torque specifications, oil and filter change, coolant flush and refill. Chassis Procedures: Wheel bearing replacement, steering head bearing adjustment, brake pad replacement, brake rotor inspection, chain and sprocket wear checks and replacement, tire mounting and balancing. Maintenance Procedures: Pre-ride checks, scheduled maintenance tasks, lubrication points, air filter cleaning/replacement, spark plug gap and replacement. Troubleshooting Procedures: Diagnosing starting issues, performance problems, overheating, electrical faults, suspension noises. Technical Depth Technical Depth: Comprehensive: Covers everything from basic maintenance and adjustments to full engine rebuilds, component diagnostics, and electrical system troubleshooting. Includes detailed torque specifications, tolerances, and assembly sequences. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High-resolution scans suitable for clear printing. Diagrams and illustrations are sharp and legible. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Searchability Searchability: Likely searchable text within the PDF for quick information retrieval. ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, four-stroke, V-twin (90-degree) Displacement 450: 449.5 cc Displacement 550: 549.4 cc Bore Stroke 450: 72 mm x 55.2 mm (approximate) Bore Stroke 550: 82 mm x 52.7 mm (approximate) Valve Train: DOHC, 4 valves per cylinder Compression Ratio 450: Approximately 12.0:1 Compression Ratio 550: Approximately 11.5:1 Performance Horsepower 450: Estimated 50-55 hp (at crankshaft) Horsepower 550: Estimated 60-65 hp (at crankshaft) Torque 450: Estimated 32-35 lb-ft (at crankshaft) Torque 550: Estimated 38-42 lb-ft (at crankshaft) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Throttle Body Size: Likely 45mm (variable by model/year) Fuel Type: Unleaded gasoline, 95 RON (91 AKI) or higher recommended Lubrication Oil Type: High-quality synthetic motorcycle oil, SAE 10W-40 or 15W-50 (refer to manual for specific API/JASO ratings) Cooling Coolant Type: Ethylene glycol-based coolant with corrosion inhibitors, 50/50 mix with distilled water. 🔧 Transmission Standard Transmission Type: 6-speed manual sequential gearbox Optional Optional Features: N/A Features Clutch Type: Wet multi-plate, hydraulically operated Transmission Oil: Refer to manual for specific gear oil specification (often a dedicated gear oil or shared engine oil, depending on design). 📐 Dimensions Exterior Frame Type: Steel or aluminum trellis frame Wheelbase: Approximately 1470-1500 mm (57.9-59.1 inches) Seat Height: Approximately 900-920 mm (35.4-36.2 inches) Weights Dry Weight 450: Approximately 124 kg (273 lbs) Dry Weight 550: Approximately 129 kg (284 lbs) Fuel Capacity: Approximately 7.2 liters (1.9 US gallons) Wheels Tires Front Wheel Size: 17-inch Rear Wheel Size: 17-inch Front Tire Size: 120/70-17 Rear Tire Size: 160/60-17 (or similar) Bolt...