From 2003 the injected Pegaso carried on with the same five-valve 652 cc single and chassis layout, with the oil reservoir built into the steel front…
| MODEL | APRILIA PEGASO 650IE 2003 - 2006 |
| Year | 2003 - 2006 |
| Engine Type | Four stroke, single-cylinder, DOHC, 5 valves |
| Displacement / Capacity | 652 cc / 39.8 cu in |
| Bore X Stroke | 100 x 83 mm |
| Compression Ratio | 9.1:1 |
| Cooling System | Liquid cooled |
| Max Power | 36.4 kW / 50 hp @ 7000 rpm |
| Max Torque | 59 Nm / 6.02 kgf-m / 43.5 lb-ft @ 6500 rpm |
| Ignition | Electronic DIAC (Dynamic Ignition Advance Control), managed by the injection control unit |
| Induction | Indirect multi-point electronic fuel injection, 34 mm throttle bodies |
| Start System | Electric with decompressor |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | Multi-disc in oil bath |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Aluminium double beam with front boxed steel section operating as oil tank |
| Front Suspension | 45 mm Marzocchi upside-down forks, preload adjustable, 175 mm / 6.9 in travel |
| Rear Suspension | Varying-section high-strength steel swing-arm, Aprilia Progressive System (APS) rising-rate linkage |
| Front Brakes | Single 300 mm disc, 2-piston caliper |
| Rear Brakes | Single 220 mm disc, 1-piston caliper |
| DIMENSION SPECS | |
| Overall Length | 2159 mm / 85.0 in |
| Overall Width | 810 mm / 31.9 in |
| Overall Height | — |
| Seat Height | 810 mm / 31.9 in |
| Wheelbase | 1478 mm / 58.2 in |
| Ground Clearance | 249 mm / 9.8 in |
| Dry Weight | 160 kg / 352 lbs |
| Wet Weight | 175 kg / 385 lbs |
| WHEEL SPECS | |
| Front Tyre | 100/90-19 |
| Rear Tyre | 130/80-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 21 Litres / 5.5 US gal |
| Fuel Consumption | 5.6 L/100 km / 17.7 km/l / 41.6 US mpg |
| Top Speed | 178.6 km/h / 111 mph |
From 2003 the injected Pegaso carried on with the same five-valve 652 cc single and chassis layout, with the oil reservoir built into the steel front section of its aluminium beam frame. It remained the road-leaning member of the family: comfortable on tar, capable on graded trails, with a long-range 21-litre tank and strong single-disc front braking. It was the last Pegaso of this lineage before Aprilia replaced it with the restyled Strada, Trail and Factory models.
