Segment:
High-performance dual-sport / supermoto motorcycles.
Target Audience:
Enthusiast riders, mechanics, Aprilia owners seeking in-depth repair and maintenance information.
Competitors 2008:
KTM (e.g., 690 SMC), Husqvarna (e.g., SMR series), Ducati Hypermotard.
Vehicle Focus:
Off-road prowess (RXV) and street legality/supermoto capability (SXV) with powerful V-twin engines.
Manual Value Proposition:
Official factory data ensures accuracy for complex V-twin engine and sophisticated chassis repairs.
Engine Mechanical:
Complete overhaul, piston, rings, valves, camshafts, crankshaft, connecting rods, lubrication system, cooling system.
Engine Management:
Fuel injection system (EFI), ignition system, sensors (TPS, MAP, IAT, O2), ECU diagnostics, wiring diagrams.
Transmission:
Gearbox disassembly, inspection, repair, clutch system (wet multi-plate), gear selector mechanism.
Chassis Frame:
Frame inspection, subframe, steering head bearings, swingarm, linkage system (if applicable).
Suspension:
Front fork (upside-down) disassembly, rebuilding, adjustments; Rear shock absorber inspection, service, linkage maintenance.
Brakes:
Front and rear brake system service, caliper inspection, pad replacement, master cylinder, brake lines, bleeding procedures.
Electrical System:
Wiring diagrams, battery, starter motor, alternator, lighting (headlight, taillight, signals), horn, fuses, relays, ECU.
Fuel System:
Fuel tank, fuel pump, fuel filter, fuel lines, throttle body service.
Exhaust System:
Exhaust header pipes, muffler, heat shields, O2 sensor installation.
Bodywork Trim:
Fairings, fenders, seat, fuel tank cover, graphics removal/installation, plastics.
Routine Maintenance:
Oil and filter changes, air filter cleaning/replacement, chain adjustment and lubrication, spark plug inspection/replacement, brake fluid replacement.
Troubleshooting:
Diagnostic charts, common fault finding, error code interpretation (if applicable), performance issues.
Engine Repair:
Top-end rebuild, bottom-end rebuild, valve clearance adjustment, timing chain inspection/replacement.
Suspension Service:
Fork seal replacement, oil level and type specification, shock absorber service.
Electrical Diagnostics:
Wiring diagram interpretation, continuity testing, voltage checks, component testing.
Wheel Tire Service:
Tire mounting/dismounting, wheel balancing, spoke tensioning (if applicable).
Depth:
Comprehensive (from basic maintenance to complete engine and chassis rebuilds), detailed step-by-step instructions.
Type:
Four-stroke, V-twin (90-degree)
Displacement 450:
449.8 cc
Displacement 550:
549.4 cc
Bore X Stroke 450:
72 mm x 54.3 mm (estimated)
Bore X Stroke 550:
82 mm x 54.3 mm (estimated)
Compression Ratio:
12.5:1 (typical for both variants)
Valve Train:
DOHC, 4 valves per cylinder
Horsepower 450:
Approx. 57 HP (at crankshaft, model dependent)
Horsepower 550:
Approx. 65 HP (at crankshaft, model dependent)
Torque 450:
Approx. 46 Nm (at crankshaft, model dependent)
Torque 550:
Approx. 53 Nm (at crankshaft, model dependent)
Induction:
Electronic Fuel Injection (EFI) with throttle body diameter typically 45mm.
Fuel Type:
Unleaded gasoline (RON 95 or higher recommended).
Oil Change:
Every 3,000 km or annually (whichever comes first), consult manual for specific conditions.
Air Filter:
Clean every 2,000 km or annually; replace as needed.
Valve Adjustment:
Every 6,000 km or annually.
Engine Oil:
API SG/SH/SJ or higher, SAE 10W-40 or 15W-50 (viscosity depends on ambient temperature). Recommend fully synthetic motorcycle-specific oil.
Clutch Fluid:
DOT 4 brake fluid.
Coolant:
Ethylene glycol based coolant with anti-corrosion additives, mixed 50/50 with distilled water.
Common Problems:
Potential for valve guide wear, camshaft wear, occasional electrical gremlins, vibration-related fasteners loosening. Early models sometimes had fuel pump issues. The V-twin configuration requires diligent maintenance.
