Upgrading the rear bushings in the front lower control arms removes a significant amount of deflection when the car loads the bushings during cornering and change of direction. This provides a much more consistent contact patch for the tire as the arm is more rigidly located; this in turn provides more grip from the tires. You'll also benefit from reduced toe change under acceleration and braking - again; the bushing deflects significantly less providing a far more consistent alignment and contact patch for the tires.
The superior construction/design of the bushings also offers more accurate feedback through the steering. As the car turns off-center you're removing the momentary compression of the bushings for a quicker reaction and you're removing the repeated deflection of the bushing over uneven pavement while cornering - you'll feel more of the surface change through the wheel but you'll also have more precise control over the path of the front end.
Adding positive caster has two primary benefits here. 1) it increases the self-centering effect of the front end and weights up the steering slightly - with the benefit of increased accuracy addressed above this simply allows you to place the car a bit more accurately and naturally. 2) adding positive caster adds dynamic camber gain with increased steering angle. Said differently - as you increase positive caster - the wheels/tires will 'lean' into the corner more as you turn the wheel more. Additional positive caster - and the dynamic camber gain it brings - can allow you to run a bit less static negative camber so more of the can be used during straight line braking and acceleration.
First - as an FYI that isn't our website, they are an independent Authorized Dealer in Texas. Note the dealer disclaimers at the top left, two at the bottom center.
Second - The ALOY0006K and ALOY0007K arms have been discontinued and superseded by our ALOY0018K control arm kit.
ALOY0006K increased positive caster by 2.0° and required a good amount of attention to wheel and tire sizes/specs, ride height and understanding of how to properly align the car and locate the subframe after installation.
ALOY0007K increased positive caster by only 1.0° but did not provide clearance for Audi's alloy subframe whether installed on Audi models from the factory or retrofitted to Golf models by owners.
ALOY0018K is a all new forged alloy arm set that incorporates 1.0° of positive caster gain, -0.5° of negative camber gain and is compatible with the Audi alloy subframe, A3, S3, RS3 models, etc.
https://superpro.com.au/show-product/superpro-alloy-arm-kit/orphan-ALOY0018K
