XYZ Racing Super Sport Coilovers — Toyota MARK X GRX120 2004-2009

The GRX120 Mark X left Toyota’s line tuned for quiet executive miles: soft factory dampers, a nose-heavy front-engined V6 layout, and enough body roll to mask the rear-drive chassis underneath. The XYZ Racing Super Sport coilover for the Toyota MARK X GRX120 is built to wake that platform up without turning a refined saloon into a track-only compromise.

This is the fast-road and weekend-track member of the XYZ range. It gives you height adjustment to drop the Mark X’s tall standard ride and 36-way damping to firm up the float, so the car holds a line on a B-road and still settles for the daily commute the morning after a circuit session.

What this coilover does for your 2004-2009 Toyota MARK X GRX120

Lower the GRX120 on these and the first thing you feel is the body roll disappearing – the soft OEM dampers were the weak link, and the Super Sport’s 36-way adjustment lets you wind in support to match how hard you drive. Turn-in sharpens because the front no longer dives and washes wide before the rear-drive balance can do its job. For a heavy RWD saloon sharing its underpinnings with the Lexus GS and Crown of the era, that recovered control is the difference between cruising and actually steering with the throttle. Drop the ride height and the stance tightens up too, closing the arch gap these cars are known for. Crucially, you can back the damping off for motorway and town use, so the car stays civil rather than crashing over every ridge.

About the Super Sport coilover

The Super Sport is engineered to kill the discomfort that comes from bumps and broken surfaces while still delivering proper performance damping. Each unit is height-adjustable, letting you set the GRX120’s stance and corner balance independently of spring preload, and the headline feature is 36-way damping adjustment across a single combined knob. That spread of settings means one kit covers wildly different conditions – a soft, compliant motorway setup at one end and a firm, body-controlled circuit setup at the other. XYZ rate it as a high-performance damper suitable for both weekend racing and daily driving, which is exactly the brief most Mark X owners are working to. It is the sensible pick when you want the car to feel alive on a Sunday without punishing you Monday to Friday.

Fitment for the Toyota MARK X GRX120 (2004-2009)

This kit is built specifically for the GRX120-chassis Toyota Mark X across the 2004 to 2009 model span. It suits the front-engined, rear-wheel-drive saloon in its standard form. Confirm your chassis code reads GRX120 before ordering so spring rates and mounting hardware match your car.

What buyers also search for

• Toyota Mark X GRX120 coilover upgrade for road and occasional track
• GRX120 Mark X height-adjustable suspension to fix the factory arch gap
• Super Sport 36-way damping coilovers for a daily-driven RWD saloon
• Toyota Mark X V6 suspension that stays comfortable on the motorway
• Rear-wheel-drive JDM saloon coilovers for fast-road handling

Set your ride height and pick your damping spec in the configurator below.