Maserati Quattroporte M139 2003-2012 — Coilovers

The M139 Quattroporte carries its Ferrari-derived 4.2-litre V8 high and forward, and in standard Skyhook-equipped trim it rides soft, floats over crests and leans hard through a long, loaded corner. This XYZ Racing coilover range for the Maserati Quattroporte M139 gives you back control of that mass – height, spring rate and damping all set by you rather than left to a 20-year-old adaptive strut that costs a fortune to replace.

These are not a single compromise spring. The range spans nine builds, from the road-biased Street Advanced and Super Sport through track-focused Top Sport, Circuit Master and Racing Spec, plus Drift Spec and dedicated Tarmac, Gravel and Pro Rally setups. You pick the character that suits how you actually use the car.

What this coilover does for your 2003-2012 Maserati Quattroporte M139

Drop the considerable factory ride height and the Quattroporte stops looking like a hire-fleet saloon and starts sitting over its wheels the way Pininfarina’s lines deserve. More important is what you feel: tightened body control across the front axle, far less of the float that the standard damping allows over motorway expansion joints, and a flatter, more confident attitude when you lean on the V8’s weight through a fast sweeper. Adjustable damping lets you run the car compliant for long touring stints and firmer for a spirited B-road or a track session, without swapping hardware. For owners chasing expensive Skyhook strut failures, a rebuildable coilover is also a way to keep a heavy GT genuinely usable rather than parked.

About the coilover range

Every kit in this range is a height-adjustable coilover built around a threaded damper body and a separate ride-height collar, so corner balance and stance are set independently of spring preload. Damping adjustment lets you tune rebound and bump to the spring rate you choose, which matters on a car this heavy where an underdamped setup will pitch and wallow. The road-oriented builds prioritise compliance and daily usability; the Circuit Master, Top Sport and Racing Spec options run stiffer rates and tighter control for repeat hard laps; and the Tarmac, Gravel and Pro Rally specs are valved for surface-specific work. Across the line the goal is the same – to replace the M139’s soft, ageing factory damping with a serviceable, adjustable platform you can actually dial to the car and the road.

Fitment for the Maserati Quattroporte M139 (2003-2012)

This range is built for the M139-chassis Maserati Quattroporte saloon across the full 2003-2012 production run, covering both the early and facelift cars. Confirm your exact build year against the spec selector so the correct front and rear hardware is matched to your car before you order.

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Choose the build that matches how you drive your Quattroporte and configure your spec below.