The 400 cc version was sold from 1983 to 1987 and is almost visually identical to the 550, although it has slightly different height, width, length and weight specifications. It was sold in full faired, half faired and naked versions. The XZ400 was sold into non-U.S. markets (including Europe, Japan, Australia and New Zealand). The most obvious differences other than engine capacity were slotted disc brake rotors, and a strap on the seat. Most parts are interchangeable, although the 400 had a different bore and stroke, valve sizes making engine part swaps difficult.