The Vulcan name has been used by Kawasaki for their custom or touring bike since 1984, model designation VN, using mostly V-twin engines ranging from 398 to 2,053 cc (24.3 to 125.3 cu in).

For a first series, the Vulcan 400 featured a 398 cc liquid-cooled twin engine, and was fitted with a belt drive and six-speed transmission.

The series 2 was fitted with a chain drive and five-speed transmission to reduce cost and was produced in both Classic and Drifter variations.

New cam shaft profiles and slightly lower compression pistons moved the power band down to increase low end torque.

It was introduced in 2015 with an Ergo-Fit system designed for better custom comfort adjustability for different rider sizes: A choice of three foot peg positions, three seats and two handlebars are available to choose from, at time of purchase.

Retuned, heavier flywheel and redesigned intake give the Vulcan S more low and mid range torque.

[5][6] The Vulcan 88 was introduced in 1987 and was immediately seen as a shot across the bow of other big bore motorcycles of the time, notably the Honda Gold Wing (1200cc) and the Harley Davidson Electra Glide (1340cc).

[7] The 88 was a reference to the nominal displacement (in cubic inches) of the liquid-cooled V-twin engine, at 1,470 cc (89.7 cu in); the 88 was produced from 1987 through 1999.

[10] The Vulcan 1500 Classic, introduced in 1996, had a 1,470 cc (90 cu in) liquid-cooled SOHC 50° V-twin engine with a single-pin crankshaft and a 5 speed transmission.

The VN800A, introduced in 1995 and the first of Kawasaki's modern cruiser style, featured a softail design, bobbed rear fender and a 21-inch front wheel.