XYZ Racing Circuit Master Coilovers — Proton WIRA 1993-2009

Malaysia’s national time attack and touring car grids have been populated by WIRA PR04s for three decades, and not by accident. Underneath the conservative saloon body sits a Mitsubishi-derived MacPherson strut platform that responds to proper spring and damper rates more readily than the factory calibration lets on. The stock setup prioritises ride compliance across mixed roads, leaving genuine circuit performance unrealised.

The Circuit Master coilover for the Proton WIRA 1993-2009 is XYZ Racing’s competition-grade answer to that gap – designed for sustained circuit lap-time work and developed through XYZ Racing’s own teams across international circuits worldwide.

What this coilover does for your 1993-2009 Proton WIRA

Replacing the PR04’s factory struts addresses the soft initial turn-in response the stock springs allow on a front-wheel-drive layout – on the WIRA, that means the front axle loads earlier and more predictably under braking and corner entry. The three-knob adjustment system delivers 9720 distinct damping combinations, so you can hold a hard baseline through a track session and ease back for the motorway drive home without a rebuild. Ride height adjustment drops the WIRA’s centre of gravity through geometry change rather than spring-cutting, preserving full damper travel over circuit kerbs where it matters.

About the Circuit Master coilover

The Circuit Master sits alongside XYZ Racing’s Racing Spec, Drift Spec, and Tarmac Rally variants as one of the specialist competition configurations – this one calibrated for circuit environments rather than point-to-point or low-grip surfaces. Three separate adjustment knobs govern distinct aspects of damper behaviour; combined, they produce the 9720-way range that covers everything from a compliant fast-road baseline through to a full circuit setup. The internal oil passage architecture – where fluid routes through a narrow channel during large impacts – is a deliberate engineering choice for controlled, consistent response over kerbs and surface changes at circuit speed. That architecture has been validated through XYZ Racing team use at international venues, with the base calibration reflecting what those teams have found works under sustained running.

Fitment for the Proton WIRA (1993-2009)

This kit covers the Proton WIRA PR04 chassis across the full 1993-2009 production span. Saloon and hatchback body styles share the same suspension architecture throughout, making the PR04 a clean single-specification fitment with no variant exclusions. Confirm your subframe and strut dimensions against the configuration options below if your build has been subject to prior modification.

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Configure yours below to confirm fitment and select the ride height range for your WIRA build.