Upgrade the performance of your Impreza with the Adjustable Rear Lateral Control Arm Kit. This kit contains 4 adjustment arms with performance low compliance bushings. The 4 control arms included in this kit are adjustable up to 50mm. Left-right-hand thread adjustment turn-buckle nut provides an easy adjustment while the control arm is still on your Impreza. As a result of the 4 adjustable arms you will see greater range and a more precise adjustment of your vehicle. The Whiteline Lateral Control Arm Kit provides a more direct connection of the body to the rear suspension. This allows your Impreza to provide a consistent predictable ride. Performance low compliance bushings are designed to reduce movement from the suspension to increase the overall handling compared to standard bushings. This kit includes 4 complete rear adjustable arms. The installation process for the Rear Lateral Control Arm Kit takes 2 hours and is a do it yourself installation process. The Rear Lateral Control Arm Kit is compatible with 2004-2007 Impreza WRX STI models.