Quick FYI - I posed an inquiry regarding the availability of this kit here in the States to Zeckhausen Racing (
http://www.zeckhausen.com/) and here was the President/owner's extremely informative response:
"This is what's known in the brake industry as a "move-out" kit. It takes your existing caliper and moves it out with a relocating bracket to fit over a larger diameter rotor. Unfortunately, it also screws up your brake balance, since it increases the brake torque at the front wheels by the same percentage as the rotor radius changes.
What's the result of increasing your front brake torque without a corresponding percentage increase in the rear? Longer stopping distances. (Except in the case where the stock brakes would have been fade limited and the larger rotors are not yet fading.) This is because the front tires reach saturation sooner and begin to lock up (engage ABS) before the rear tires have reached their maximum braking potential.
Unstable stability control is also a concern. ABS is adaptive (closed-loop) and will eventually converge on a solution that gets your car stopped, while maintaining the ability to steer. But stability control is open loop. If your car goes into a skid, the car "hits" the brakes at one or more corners of your car. If the brake torque reaction is much greater than what the system expects, then the car over-corrects the problem and can potentially make it worse or at least take longer to stabilize the car.
Over-amplification of the brakes is the final issue. With a move-out kit installed in the front or at all four corners, the amount of brake torque for a given driver input will be greater than stock. Under panic stop situations, it may make it more difficult for the driver to accurately modulate the brakes. It's like driving a car with too much brake boost.
What's your real goal here? What are you trying to accomplish with this brake "upgrade" for the Audi? Is there something your stock brakes are not doing well that you hope to correct?"
Based upon this feedback, it looks like I will need to save for a BBK
