While I won't claim a percentage increase in braking performance, I can tell you that it's greatly improved. I bought them and installed them on a 2015 4runner with front and rear off-road bumpers, winch, skid plate, roof rack and sliders. All in all I easily have an extra Β£800 permanently for the vehicle and if I'm packing for a weekend trip that easily doubles. These brakes provide amazing stopping power without having to upgrade the calipers themselves (they don't make upgraded calipers for the 4runner yet). I highly recommend them and will soon be installing them on my new 2011 4runner that I just bought.
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