1973 Kawasaki Z1-900 RS

In 1973, Kawasaki launched the 1973 Kawasaki Z1-900 RS — a standard motorcycle that would come to define an era of motorcycling. Hailing from Japan, it combined Japan engineering with standard motorcycle appeal.

Powering the 1973 Kawasaki Z1-900 RS is a 903cc DOHC inline-4 producing 82hp. This four-cylinder engine uses air-cooled cooling and draws fuel through 4x Mikuni carburetors. A 5-speed gearbox sends power via chain final drive to the rear wheel.

The chassis employs a steel double cradle frame with telescopic fork up front and twin shock at the rear. Stopping power comes from single disc front and drum rear brakes. Tipping the scales at 230 kg (507 lbs) dry, the 1973 Kawasaki Z1-900 RS offers a manageable riding experience with a 1490 mm wheelbase.

Performance-wise, the 1973 Kawasaki Z1-900 RS achieves a claimed top speed of 210 km/h (130 mph). With a generous fuel capacity of 18.0 liters, it offers reasonable range for standard motorcycle duties. The seat height of 820 mm makes it comfortable for most riders.

Today, the 1973 Kawasaki Z1-900 RS is considered a desirable collector motorcycle that has appreciated significantly in value over the decades. Parts availability is rated as moderate, making ownership a dedicated pursuit. It remains an icon of Kawasaki motorcycling from 1970s.