my car is 2003 350Z and i change to stoptech big break kit. after i change it, when i touch the break that always have big noise, just like no break pads. who can tell me is the big break kits have problem or the stoptech big break kits just like this.

 

ok ... better question is who installed it?

 

You really need to call StopTech on a matter like this. I, too, have the 4-wheel StopTech setup and everything went smooth when I installed it & has been perfect for a year now.

Is your kit new? Used?
Did you install it? or a repair shop?
Did you remove/cut out the rear dust plates? (if you did the rears)
Install new pads with the kit?
Bed in the pads?
The noise...is it a grinding, a squeal, a rub???

With the minimal info you gave, it could be many different things.........

 

I had that BBK and no problems with noise. Did you bed them in properly?

Here is a link to Stoptechs bedding instructions. Its on the last 2 pages of this manual:

http://8.7.96.35/tech_info/manuals_b...A_06-04-05.pdf

Hope it helps.