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The 2015 WRX / WRX STI offers it's owners much improved performance over previous models. This will only encourage you to get out to road courses and/or do some real spirited driving. Improve your lap times and let the good times roll longer with an AP Racing Big Brake Kit. AP Racing has been in the motosport industry for over 50 years and makes on the most high performing brake kits available. Watch in the video below as Yo shows you how easy it is to make the upgrade!