The fourth edition, Aprilia Pegaso 650, was presented in 2004 at the Intermot show in Munich as a wholly renewed model and was offered in Strada, Trial, and Factory versions.
In 2005, the Italian motorcycle manufacturer launched the Aprilia Pegaso 650 Strada, a motorcycle designed for lovers of speed and tight curves. The bike was characterized by its 17-inch alloy wheels.
Unlike the standard Pegaso model, the 650 Strada featured tuned suspensions, engine, mapping, and ergonomics that provided better comfortability when riding on paved roads.
In the visual and technical departments, the bike had standard features, such as a redesigned front cowl, a digital instrument panel, lightweight cast alloy wheels, a dual seat with passenger grab handles, an aggressive paint job, an engine plate, and an under-seat-mounted exhaust system.
Suspension-wise, the bike packed a 45 mm Marzocchi telescopic fork on the front end and an adjustable Sachs Boje shock absorber on the rear, providing optimum suspension performance and handling capabilities.
The bike's wheels were fitted with a 300 mm disc on the front and a 220 mm disc on the rear. The rear one was engaged by a single-piston caliper, while the front disc was coupled to a dual-piston caliper.
As for the power figures, the 2005 Aprilia Pegaso 650 Strada had its heartbeat set by a 659cc four-stroke liquid-cooled single-cylinder engine that delivered an output power of 48 hp at 6,250 rpm and 61 Nm (45 lb-ft) torque at 5,200 rpm.