XYZ Racing Street Advanced Coilovers — Subaru IMPREZA STI GRB/GVB/GRF/GVF 4WD 2007-2014

The GRB/GVB and GRF/GVF generation STI carries its EJ257 flat-four low in the engine bay, and that boxer layout plus symmetrical AWD is what gives this car its flat, planted cornering character rather than the nose-heavy feel of a conventional turbo four. Factory struts on these cars were already firm from the factory, but a decade-plus of UK B-roads and speed bumps has softened bushes and settled springs, so ride height and damping response drift long before most owners notice.

The XYZ Racing Street Advanced coilover for the Impreza STI GRB/GVB/GRF/GVF 4WD is built for exactly that owner: someone who wants the car properly resolved for daily UK roads with the option to sharpen it for a track day without swapping kit. It replaces the tired factory strut/spring assembly on all four corners and gives you control over ride height and damping that the standard STI setup never offered.

What this coilover does for your 2007-2014 Subaru Impreza STI GRB/GVB/GRF/GVF 4WD

With 720 damping settings to work through, you can back the compression off for motorway and pothole-heavy commuting, then firm it up before a track day without any of the harshness that comes from a fixed-rate aftermarket spring. Lowering the ride height on the STI’s AWD platform brings the centre of gravity down further, which matters on a car that already corners flat thanks to the boxer engine – the result is less body roll transferring load off the inside rear wheel, a known STI trait through fast direction changes. Height-adjustable perches let you correct the factory rake and dial in the front-to-rear balance that determines how much of the DCCD centre diff’s torque split actually reaches the road. On a car this old, fresh coilovers also mean losing the vague, wallowy feel that comes from worn factory dampers, so steering inputs translate into chassis response again instead of getting soaked up.

About the Street Advanced coilover

Street Advanced is XYZ Racing’s core product line, refined over successive seasons of testing across the company’s international racing programme before being brought to road-going spec. It’s pitched deliberately between comfort-focused and full competition setups: usable for a daily-driven STI, capable enough that owners take the same car to track days without changing parts. The 720-way damping adjustment is the headline figure – enough granularity to find a setting for a specific road surface or lap rather than picking between two or three compromise positions. Construction follows XYZ’s standard monotube-style architecture with height-adjustable lower mounts, so ride height and preload are set independently of damping. For an owner who wants one coilover kit to cover both the commute and the odd trackday, rather than running two separate setups, this is the line built around that brief.

Fitment for the Subaru IMPREZA STI GRB/GVB/GRF/GVF 4WD (2007-2014)

This kit is specified for the GRB, GVB, GRF and GVF chassis STI, covering both hatch and saloon 4WD variants built between 2007 and 2014. It’s matched to the factory AWD strut mounting points and geometry across that model span, so no chassis modification is needed for installation on any of the four bodystyles.

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Ready to sort out how your STI sits and rides on UK roads – configure yours below to pick the spec that matches how you actually drive it.