About a year and a half ago I put on
the 12" LE1 brakes using "B" spindles and calipers and Poleposition upper control arms. I also replaced all of the hard and soft lines and the combination valve. After about 8 months the brakes started to pulsate. I had them turned and all was fine until about a month ago it started again. The only thing I haven't replaced is the master cylinder. I plan on replacing it soon but could there be another problem? Also there always seems to be more brake dust on the drivers side.Thanks for any help.

A lot of vehicles go through this. We see about a dozen brand new Jeeps every week with the same complaint. Rotor brand selection is very important. Many manufacters use inferior grade iron when building rotors, it will cause them to be much more likely to warpage. Look up a set of rotors on the net, you will be suprised by the price difference between vendors. This does not mean that the most expensive ones are the best but when a few are below 30/ea and then a few are over 50/ea it should make one ask why?

Thanks for the reply, I bought these at Advanced . Don't remember the brand but they where about $80 each.
I am going to replace the MC anyway just to get the bigger piston.
Sorry for the double post.