Whiteline 04-07 Subaru STi Rear Control arm-adjust. toe/camber

Whiteline Rear Adjustable Lateral Link Kit — Subaru Impreza WRX STI (KTA123)

A complete four-arm kit — two rear control arms and two front control arms — pre-fitted with low-compliance polyurethane bushings, designed to modify factory camber, toe, and track on the STI's rear suspension.

Why the whole set rather than one arm. The factory rear geometry has limited adjustment, and correcting camber alone often puts toe somewhere you don't want it. Replacing all four gives you camber, toe, and track width independently, with 50mm of adjustment range — enough to actually dial the rear in rather than compromise.

Anti-geometry design aids traction by letting the wheel track the ground more precisely under load. The practical result on an AWD Subaru is superior traction under power including mid-corner, and dramatically reduced understeer and front wheel spin.

The heavy-duty materials and low-compliance bushings also create a more direct connection between the body and rear suspension, which makes the car's behavior more predictable at the limit — less of the vague, delayed rear end you get when the factory rubber deflects under load.

Built to survive underneath a car. Protective powder coating acts as a hard skin far tougher than conventional paint. Internal grease reservoirs provide continual self-lubrication, and the kit ships with extreme-pressure molybdenum disulphide grease for extended life.

Fitment: 2004-2007 Subaru Impreza WRX STI.

Set of 4. Install guide included.

Budget for an alignment. These are adjustment components — installed and left at default they do nothing for you. The value shows up after the car is on the rack.

3 year warranty.