XYZ Racing Circuit Master Coilovers — Lexus GS 300/400 (S140) 1993-1997

The S140 GS platform rides on double wishbones at all four corners – a layout with genuine circuit potential, though one that Lexus deliberately calibrated for long-distance refinement rather than lap-time intent. The factory dampers are generous in travel and soft in rate, which makes the GS 300’s 2JZ-GE a smooth motorway companion but leaves the car frustratingly vague under load on circuit.

The Circuit Master coilover addresses that directly. Fitting one to the 1993-1997 Lexus GS 300/400 S140 replaces that factory compliance with rates calibrated for sustained circuit work – and the S140’s double wishbone geometry, already sound in principle, begins to behave as its architecture actually suggests it should.

What this coilover does for your 1993-1997 Lexus GS 300/400 (S140)

The S140’s considerable kerb weight and front-heavy balance across both GS 300 and GS 400 variants demand spring and damping rates the standard suspension was never asked to provide. The Circuit Master’s 9,720 adjustment combinations give precise control over that front-rear balance – letting you work around the mass of the 1UZ-FE V8 in GS 400 trim, or tighten the GS 300’s turn-in without unsettling the rear over the long wheelbase. Body roll reduces to the point where weight transfer becomes a tool rather than a liability, and corner-entry stability follows from there. Mid-corner composure and the ability to trail-brake with confidence are the primary gains a circuit driver will feel first.

About the Circuit Master coilover

XYZ Racing positions the Circuit Master as its competition-grade specification – the range run by XYZ Racing teams competing on international circuits worldwide and developed through sustained race use across those environments. The headline figure is 9,720 individual adjustment combinations, accessed through three independent adjustment knobs rather than a single compound dial. That level of granularity reflects the range’s pedigree across Racing Spec, Drift Spec, and Tarmac Rally applications, where each discipline demands a meaningfully different damping character from the same hardware. The small oil hole design used in the Circuit Master’s damper internals produces precise, controlled oil flow; a faint noise when the car traverses a large, sharp-edged kerb or bump is a normal characteristic of that architecture, not a fault. The Circuit Master is built for circuit surfaces, and the firm responses to road-going imperfections that accompany that specification are part of the considered trade-off.

Fitment for the Lexus GS 300/400 (S140) (1993-1997)

This kit is specified for the S140 chassis in both GS 300 and GS 400 derivatives, covering the full 1993 to 1997 production run. The fitment encompasses both the 2JZ-GE inline-six and 1UZ-FE V8 variants. Verify your specific build year and drivetrain configuration before ordering.

What buyers also search for

• Lexus GS 300 S140 coilover upgrade for circuit and fast-road use
• Lexus GS 400 S140 suspension with high-count adjustable damping
• S140 GS 300/400 coilover kit to replace soft factory setup for track days
• Lexus GS 300/400 1993-1997 height-adjustable coilover with multi-way damping control

Configure yours below – spring rate and ride height can be set to match precisely how you use the S140 on circuit.