XYZ Racing Top Sport Coilovers — Lexus GS 300/400 (S160) 1998-2005

The S160 GS 300/400 carries its weight well for a 1,600kg-plus luxury saloon, but the factory suspension was conceived around a different brief entirely. Lexus calibrated it for long-distance motorway comfort and near-silent refinement, which means the 2JZ-GE or 1UZ-FE power under the bonnet rarely gets to express itself cleanly through corners – the body roll accumulates before the tyres have had a chance to get properly loaded.

Closing that gap is what the XYZ Racing Top Sport coilover is designed for on this chassis. Spring rates and damping forces are stepped up relative to a pure road baseline, and the ride height drops to bring the GS’s substantial centre of gravity closer to the tarmac – giving the S160’s rear-wheel drive platform a dynamic character far closer to what its drivetrain actually promises.

What this coilover does for your 1998-2005 Lexus GS 300/400 (S160)

The GS 300/400’s factory damping gives up fairly quickly under sustained lateral load: body roll builds, the rear axle starts to feel vague, and confidence drops before the tyre is actually at its limit. The Top Sport’s firmer damping curve – increased 30 to 50 per cent over the street calibration – tightens that body control markedly. With spring rates lifted 2kg/mm against the street setting, the suspension still absorbs the kind of large surface irregularities common on UK circuit approach roads rather than crashing through them. The lower ride height reduces pitch under braking and improves front-end response for a car whose original geometry was set with comfort as the dominant priority. For a platform increasingly pressed into track-day duty, the result is a GS 300/400 that handles with considerably more intent without the wrist-punishing ride of an outright circuit-only setup.

About the Top Sport coilover

XYZ Racing’s Top Sport range sits between street-focused comfort and outright circuit specification, calibrated specifically for track day use alongside regular road driving. The damping specification is set 30 to 50 per cent firmer than the brand’s street setting, with spring rates increased by 2kg/mm – the practical effect being that large impacts are absorbed progressively rather than passed through the chassis, while the overall spring and damper package suppresses body movement that undermines traction. All settings in the Top Sport line draw on XYZ Racing’s motorsport development work, translating that experience into a coilover that functions across the range of conditions a road-driven track-day car actually encounters. The setup is designed to increase tyre contact-patch consistency under lateral load, which matters most when the GS 300/400’s rear axle is managing both acceleration and cornering forces simultaneously.

Fitment for the Lexus GS 300/400 (S160) (1998-2005)

This kit covers the second-generation Lexus GS on the S160 platform, fitting both the GS 300 (2JZ-GE straight-six) and GS 400 (1UZ-FE V8) variants across the full 1998 to 2005 production run. Confirm your chassis code is S160 before ordering.

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Build yours below – the configurator takes you through spec selection for the S160.