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

When you're looking to dial in the handling on your 2004-2007 Subaru Impreza WRX STI, this Whiteline Adjustable Rear Lateral Control Arm Kit is what you'll want. This kit includes four complete rear adjustable control arms, each fitted with performance low-compliance bushings. These arms are designed to let you adjust your rear camber, toe, and track settings, giving you a much greater range and more precise control over your suspension alignment than stock components. The result is a more direct connection between the car's body and the rear suspension, which helps your Impreza feel more predictable and consistent, especially when you're pushing it through corners.

What sets these arms apart is their adjustability, offering up to 50mm of range for camber and toe. The left-right-hand thread adjustment nut makes it easy to make these changes while the arm is still on the car, which is a big help during alignment. The low-compliance bushings are made from a synthetic elastomer that's designed to reduce suspension flex and movement, leading to improved handling and a more stable feel. Whiteline also applies a protective powder coating over the high-strength steel construction, which helps resist corrosion and makes these arms tough enough to handle demanding conditions. The kit comes with internal grease reservoirs and specialized grease to keep the bushings lubricated for the long haul.

This kit is designed to give you more control over your rear suspension geometry, helping to optimize camber alignment to compensate for body roll and tire distortion during cornering. This can lead to improved traction under power, both in straight lines and through turns, and can help reduce understeer. Whiteline includes a detailed installation guide to help you through the process, which they estimate can be a do-it-yourself job taking about 2 hours.