The Kawasaki Ninja 650R, also known as the EX-6 or ER-6f, was a standard motorcycle part of the Ninja series, presented in 2005 and sold from 2006. When it was introduced in 2006, the ER-6f came alongside its naked brother, ER-6n.
Both motorcycles were introduced in 2006, while the Kawasaki ER-6n was sold in the American market from 2009. The bike filled the gap between the Kawasaki Ninja 250R and Ninja 500R.
In the aesthetic department, the ER-6n model packed a front cowl with a dual vertically-stacked headlight system, a side panel on each side with integrated turn signals, a one-piece dual seat with passenger grab rails, an under-belly exhaust system, and six-spoke lightweight aluminum wheels.
The motorcycle was built on a diamond high tensile steel frame with a 41 mm telescopic fork on the front and an offset laid-down preload-adjustable shock absorber on the rear, offering excellent handling capabilities.
As for the braking power, the bike packed two semi-floating 300 mm petal discs tied to dual-piston calipers on the front wheel and a 220 mm petal disc with a single-piston caliper on the rear wheel, providing excellent stopping power.
In the performance department, the 2006 Kawasaki ER-6n had installed in plain sight a 649cc four-stroke twin-cylinder liquid-cooled engine with a fuel injection system in charge, boasting 72 hp at 8,500 rpm and 66 Nm (49 lb-ft) torque at 7,000 rpm.