Quote:
Originally Posted by swift996
Please post the stock details, I couldn't dig them up.
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There's some guessing involved...
It appears that Subaru simply changes the caliper bracket while retaining the caliper itself. Given this understanding, we have a single 38.1mm diameter rear piston for an area of 1.767"^2. It appears the Wilwoods shift bias rearwards with the front calipers (6 pot OR WRX fitment 4 pot) and then add even more rear bias with their rear kit.