XYZ Racing Tarmac Rally Coilovers — Holden COMMODORE SEDAN 1999-2006

The VT/VX/VY/VZ Commodore sedan is a long-wheelbase, live-axle-then-IRS rear-driver carrying a thumping iron-block (or LS) up front, and on a sealed special stage that nose weight wants to push wide on turn-in and pogo over mid-corner ripples. The XYZ Racing Tarmac Rally coilover for the Holden Commodore Sedan 1999-2006 is built around that problem – keeping the front tyre loaded over broken hot-mix while the rear stays planted enough to put 250-plus horsepower down out of a hairpin.

Sealed-stage tarmac rallying punishes a damper in a way road or even circuit work doesn’t. Compression hits arrive in clusters – apex kerb, mid-corner expansion joint, exit crest – and the suspension has to recover between each one without packing down. That recovery behaviour is what this kit is set up to deliver on a heavy, long-bodied Australian saloon.

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

On a Commodore on stage tyres, the first thing you feel is the front end no longer giving up under hard trail-braking into a tightening bend – the platform stays flat instead of diving onto the bump stops. Mid-corner, the rear axle stops skipping over the high-frequency stuff that used to wash the back end out on cambered country tarmac. Traction off the apex improves because the damper is absorbing the jolt of a big bump instead of letting the wheel unload. You also get usable ride height adjustment to tuck the chassis down for the stage without scraping the sump on the transit between them, and the damping range is wide enough that the same car can do a road section, a service halt re-set, and a full-attack stage without a spanner coming out.

About the Tarmac Rally coilover

This is a damper engineered specifically for tarmac rally use, where the road surface is sealed but rarely smooth. The internals are tuned to absorb the impact of uneven pavement – the kind of broken edges, patched repairs and sudden compressions you get on closed-road stages – rather than the glass-flat surface of a circuit. Across a big hit, the valving is set up to suppress shock to the body and stop the wheel skipping, which directly increases tyre contact and traction through the event. Vehicle stability is the priority: a chassis that stays predictable when the road surface isn’t gives the driver the confidence to commit. Every setting in this kit comes out of XYZ Racing’s own tarmac rally programme, so the baseline you bolt on is a baseline that has already been raced. It is not a circuit coilover with the rebound backed off – it is a separate damper philosophy.

Fitment for the Holden Commodore Sedan (1999-2006)

This kit is built to chassis code HO01, covering the VT, VX, VY and VZ sedan body styles from 1999 through to 2006. Both V6 and V8 variants are included in the fitment window. Confirm your registration date sits inside the 1999-2006 range before ordering, and check trim-specific brackets in the configurator below.

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Build your spec for the Commodore below – spring rate, ride height and damper preferences are all configurable before checkout.