XYZ Racing Top Sport Coilovers — Holden COMMODORE SEDAN 1999-2006

The VT-VZ Commodore sedan carries its mass high and long, and the factory dampers were never going to hold a 1,600kg rear-drive saloon flat through a fast right-hander once the tyres warmed up. The XYZ Racing Top Sport coilover is built for owners who use a VT, VX, VY or VZ as both a weekend track tool and a weekday driver – it lifts spring rate and damping force well above street settings without turning the car into something you regret on the M25.

Top Sport sits in XYZ’s range as the occasional-track-day, fully-streetable option for the Holden Commodore sedan. It is the right starting point for a 1999-2006 Commodore owner who wants real body control on track without losing the ability to drive home over broken tarmac.

What this coilover does for your 1999-2006 Holden Commodore Sedan

Spring rates are lifted by roughly 2kg/mm over a street tune and damping is increased by 30-50%, which is the headline number that separates this kit from a fast-road coilover. On a Commodore sedan that translates to a measurable reduction in nose dive under braking from triple-figure speeds, a flatter mid-corner attitude through long sweepers, and far less of the rear-end float the standard live-axle setup develops as pace builds. Ride height comes down to put the car’s centre of gravity where the chassis wants it, and the firmer platform makes the front tyres bite earlier on turn-in. Crucially the damping curve is tuned to absorb sharp impacts rather than transmit them, so kerb strikes and broken B-road surfaces stay manageable.

About the Top Sport coilover

The Top Sport sits one step up from a pure street coilover in the XYZ range and is built around the brand’s own racing experience. Damping force is calibrated 30-50% higher than the street setting and spring rate is roughly 2kg/mm stiffer, but the valving is shaped to absorb the impact of uneven pavement rather than crash through it. The result is a damper that suppresses body movement under hard load – heavy braking zones, big kerb hits, sudden weight transfers – while keeping the contact patch loaded for grip. XYZ specify it for track-day use and aggressive driving, and every setting is drawn from their own race programme. It is the coilover for the owner who wants the car to feel composed when pushed but does not want a stripped circuit car to drive to work.

Fitment for the Holden COMMODORE SEDAN (1999-2006)

This kit is built specifically for the Holden Commodore sedan chassis (XYZ code HO01) covering the 1999 to 2006 model years. That spans the VT Series II, VX, VY and VZ sedans on the GM V-platform. Confirm your build year falls within the listed range before configuring.

What buyers also search for

• Holden Commodore VT VX VY VZ coilover upgrade for road and track use
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• 1999-2006 Commodore coilover kit with adjustable ride height and damping
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• XYZ Racing Top Sport spring rate and damping spec for the HO01 chassis

Build your spec below – pick ride height, spring rate and damping options to suit how you actually use the car.