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It adopted the XL-series 4-valve engine which achieved high combustion efficiency on its body that was designed in the image of a dirt track model.

A dragger model which mounted the straight 4 engine of the former GPZ-R on its low and long form body. The SE model with a bikini cowl and the LX model with a spoke wheel were added.

The succeeding model of the GPX400S. It improved its responding ability at all speed range by controlling the ignition timing in a digital manner. It reinforced its drive system by having a rear disc rake.

The Ninja900 4-cylinder engine was downsized to half and mounted on this cruiser model. It was a chopper style model that had a stepped seat. It pursued a comfortable cruising performance.

It adopted a double disc brake to its front and a shock absorber unit with a reservoir tank to its rear, and reinforced its drive system. The LX model with spoke wheels was also released at the same time.

The R model was the homologation version of the ZXR400. It was remodeled with a cross transmission to participate in the SP racing. Ones with the "SP" logo on the under cowl is the R model.

This model was based on the GSX-R400R, and had its performance level upgraded at its practical rpm range. It was a glamorous naked model that had a conspicuous beautiful frame.

It underwent a full model change after 6 years, and got a completely new body. The V model was equipped with a VC engine with a variable valve timing system.

Its VC engine shifted the valve timing and the lift amount at approximately 9000 rpm, and brought out both mid-low speed torque and high rotation power. A limited edition with a cowl was also added in August.

The V model had a VC engine that shifted its valve timing and lift amount at 8000rpm. Ones with a bikini cowl was the VZ model. It changed its color in April, and adopted a 3D emblem.