Add to that engine bat contaminants such as oil leaks that also help to degrade the performance of steering rack mount bushings. Whiteline steering rack mounts are engineered to outlast and enhance steering precision and feedback.
With the ALK fitted to the Subaru WRX, a softer suspension will be present during braking and accelerating. This will help traction, as the wheel will be able to track the ground more precisely. Also in terms of balance the front end will have a proportionally lower roll resistance during traction or braking, aiding in reducing the power understeer effect that is present in these cars.
