XYZ Racing Super Sport Coilovers — Subaru IMPREZA GDB STI D-F (PCD: 5 X 114.3) 4WD 2005-2007

The GDB STI’s factory dampers were tuned around Subaru’s own compromise: enough compliance for a daily-driven rally-replica, not enough control for a car that puts 300bhp-plus through all four corners via the DCCD centre diff. Push a stock D-F on a B-road or a track day and the nose dives under trail braking, the rear squats hard off boost, and body roll eats into the front end’s bite through fast direction changes. That’s the gap the Super Sport coilover is built to close.

This is a fast-road and weekend track kit for the Impreza GDB, not a full race system, which matters on a car people still use to commute. Ride height and damping are both adjustable, so the same kit that tightens up the STI’s platform for a track day can be softened back off for the drive home.

What this coilover kit does for your 2005-2007 Subaru Impreza GDB STI

Fitted to the GDB STI D-F, the Super Sport’s 36-way damping adjustment lets you dial the compression and rebound to suit how the car’s actually driven – firmer for circuit sessions where the AWD system is loading all four corners hard through a chicane, softer for motorway miles without the fillings-out-of-your-head ride that cheaper coilovers give a car this stiff-bodied. Ride height adjustment brings the centre of gravity down, which the GDB’s turbocharged flat-four and AWD driveline reward more than most – less weight transfer under load means the DCCD system has a more settled platform to distribute torque across. Sharper turn-in and reduced dive under braking are the two changes most owners notice first, both of them addressing the specific vagueness that makes a stock STI feel loose at speed. The result is a chassis that holds its line through a fast corner instead of wallowing into it.

About the Super Sport coilover

The Super Sport is built around a damper designed to take the harshness out of poor road surfaces without giving up the control a modified GDB needs. Where a lot of stiff coilovers punish the driver on anything less than glass-smooth tarmac, this unit’s 36 damping positions are there specifically so the car can be set up for the conditions it’s actually facing that day – broken B-road, motorway commute, or a track’s smoother surface. Ride height is independently adjustable, letting owners correct the stance and centre of gravity without touching the damping curve. Subaru describes it as suited to both weekend racing and daily use, and the adjustment range is what makes that dual brief realistic rather than a compromise that’s mediocre at both. It’s a kit built for drivers who want one set of coilovers to cover the school run and the Sunday track day, not two separate cars’ worth of suspension.

Fitment for the Subaru Impreza GDB STI D-F (PCD: 5 X 114.3) 4WD (2005-2007)

This kit is specced for the GDB-generation Impreza STI, D to F chassis variants, built 2005 to 2007, on the 5 x 114.3 PCD. Confirm your build matches the D-F chassis code before ordering, as GDB spec changed across its production run.

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Spec your GDB STI’s Super Sport coilover kit exactly to your car – configure yours below.