Having spent most of my time in AMG Mercedes' at "fun" speeds over the last decade...I can tell you the brakes in this kit are amazing. I love the way they stop my beast! It is shocking how good they feel and how they don't seem to fade on long downhill runs. Great addition to any beast and should be on everyone's list. I am impressed on how they stop around town, at freeway speeds and over ruts, rocks, etc, on nice downhills. Brakes were one of the biggest fears I had in moving to a converted/lifted/modified van...I was very worried adding all the weight would severely compromise the already shoddy breaking system a stock e350 has (lets face it, the stockers are not designed for the extra weight or anything other than freeway commutes...so long extended downhills with the brakes constantly applied may cause brake fade (don't know for sure, since I had this upgrade from Chris right away) but know it happens even in my 600hp AMG with a BBK as big as the wheels). Anyway....get this kit and relax as you take your unit down hill with 7 kiddos in the back! I do!