Part #: KCA359M. The Whiteline anti - dive caster kit for 2002 - 2007 WRX and 2004 - 2007 STI is a game - changer for vehicle stability. Stock WRX and STI models often have an unstable front end, making handling unpredictable. When accelerating, the front end may lift, and during hard braking, it can dive. This Whiteline kit, also known as the WALK kit, keeps the front end in check, giving you more predictable handling. Whiteline offers three versions to meet different driving needs. The 'Comfort' version is quiet, perfect for daily driving. The 'Standard' version reduces deflection at the cost of some comfort and increased noise. The 'Race' version uses a metal bearing for minimal deflection and adds 1/3 of a degree of caster, but it's too noisy and harsh for street use. All three kits add 0.5 degrees of caster.

Using the Whiteline anti - dive caster kit is straightforward. First, make sure your vehicle is the 2002 - 2007 Subaru WRX or 2004 - 2007 STI. You'll need basic automotive tools to install it. If you're not confident, it's best to have a professional do the installation. When choosing a version, think about how you'll use your car. If it's for daily driving, go for the 'Comfort' version. For more performance - oriented driving, the 'Standard' or 'Race' versions are better. But remember, the 'Race' version is not meant for street use because of the noise. As for maintenance, regularly check the kit for any signs of wear and tear. If you notice any looseness or damage, get it fixed right away. Also, keep the kit clean to ensure it works well for a long time.