The Whiteline anti-dive caster kit 02-07 WRX & 04-07 STI dramatically improves vehicle stability. In stock form the front end of the WRX and STI has a tendency to move around which equate to less then predictable handling. The front end will lift up when accelerating and dive to the ground when braking aggressively. The anti-dive kit, or commonly referred to as the WALK kit, from Whiteline keeps the front end under control and provides the driver with more predictable handling. Whiteline offers three different versions of the anti-dive kit to fit many different types of driving demands. There is a "Comfort" version that is very quiet and great for the daily driver. The "Standard" version sacrifices some comfort for reduced deflection and increased noise.

Finally, the "Race" version incorporates a metal bearing for the least amount of deflection as possible and adds 1/3 of a degree of caster.The "Race" version is not recommended for street use due to the increased noise and harshness. All three of these kits will add 0.5 degrees of caster.

The Whiteline Positive Caster Kit for the 02-07 WRX & 04-07 STi is designed to improve vehicle stability by adding 0.5 degree static caster to both front wheels. Whiteline's special, low compliance bushings reduce caster wind-back and maintain tighter tolerances between static and dynamic alignment settings. The additional caster coupled with the firmer bushings serve to dramatically sharpen initial turn-in response, then forcing more consistent alignment angles through the corner due to the reduced bushing compliance.

Whiteline's "Race" version of the Positive Caster Kit incorporates a firmer bushing, that is black in color, for further reduced deflection.The "Race" version is not recommended for street use due to the increased noise and harshness.