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

The GDB STI’s symmetrical AWD layout sends power through a DCCD-controlled centre diff, and every time you get back on the throttle out of a hairpin that load has to go somewhere – through the rear crossmember, through the subframe bushes, through a spring and damper package that was never speced for repeated 9,000rpm laps. On a car built around a rally-bred EJ257, the standard dampers give up long before the engine does.

The XYZ Racing Racing Spec coilover for the Impreza GDB STI D-F is built for exactly that gap: serious track and time-attack use where the car needs to hold a line lap after session, not just for one quick blast. It replaces the factory strut and spring assembly front and rear with a purpose-tuned kit sized to the GDB’s wide track and AWD weight transfer.

What this coilover does for your 2005-2007 Subaru Impreza

Fitted to a D-F-spec GDB STI, the Racing Spec kit tightens body control under the hard weight transfer that comes with launching an AWD turbo car out of slow corners – less squat under power, less nose-dive when you’re trail-braking into the apex with the DCCD split rearward. The stiffer, track-calibrated spring and damper rates cut the roll that the standard STI setup allows through fast direction changes, which matters on a chassis this wide when you’re chasing a lap time rather than comfort. Ride height is adjustable independently of the damping, so you can set the GDB’s stance to match corner-weighting and aero balance rather than accepting a fixed factory drop. The result is a car that turns in with less delay and puts its power down more predictively, which is where a lot of AWD understeer complaints on this generation of Impreza actually come from.

About the Racing Spec coilover

The Racing Spec range is XYZ Racing’s dedicated circuit-race product, and the damping curves in it aren’t generic – they’ve been developed through direct involvement in touring car competition, including WTCC, rather than derived from a fast-road base kit. That racing-programme lineage is why the valving is stiffer and more linear than the Circuit Master or Top Sport lines: it’s built to hold a consistent damping response through a full session, not just a fast lap or two. For Imprezas running further upgrades – bigger brakes, aero, a stripped interior, or genuinely aggressive power – XYZ Racing also offers custom-specified shock absorbers, built once you supply detail on the car’s modifications and the circuit it’s being set up for, in the same way factory-level racing builds are handled.

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

This kit is specified for the Subaru Impreza GDB STI, D-F chassis revision, built 2005 to 2007, with a 5 x 114.3 PCD and permanent four-wheel drive. Confirm your build date falls within this D-F window before ordering, as earlier GDB revisions use a different fitment.

What buyers also search for

• Subaru Impreza GDB STI coilover setup for time-attack and track days
• GDB STI D-F suspension upgrade that keeps AWD weight transfer under control
• Racing Spec damping for the 2005-2007 Impreza STI built for repeat track sessions
• Adjustable ride height coilovers for the 5×114.3 GDB STI

Pick your spec for the D-F Impreza STI and configure yours below.