i had nothing but trouble and after a couple of months i had over half the bolts shear and then the disc's warped and i never did track days are realy took the brakes to there limits, so imo they are a pile of shit and i would save your money and buy some ap's
I was never happy with the set up and one other major problem i had was the kit didn't fit i ended up having to GRIND a bit out of the lower ball joint so the disk didn't foul on it, when i told LOW-Spec the problems and that the discs were now warped the basic responce was you can buy new discs if you want othere than that we aint doing shit.
Needles to say i wil never use that company again and advise other people to do the same.