LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

Big Brake Kit

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Old 12-11-2012, 11:07 AM
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thanks for the write up GXP25 very informative i saw drunkies post on GPF and was wonder if it would work on our cars and you have answered that question for me thank you i might have to give it a try her soon where did you get your parts from and could i get some part numbers from you thatd be great thanks again
Old 03-20-2013, 12:35 AM
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You can get the calipers from Amazon and hot damn are they cheap!

Last time I checked, our OEM calipers (2 piston sliding) were well over $250 each. One side (not sure which one) CTS-V caliper (4 piston fixed) is $101.31 shipped. The other is $126.38 shipped.

ACDelco 172-2287 Caliper Assembly : Amazon.com : Automotive ACDelco 172-2287 Caliper Assembly : Amazon.com : Automotive

ACDelco 172-2288 Caliper Assembly : Amazon.com : Automotive ACDelco 172-2288 Caliper Assembly : Amazon.com : Automotive

Good luck.

EDIT: This site sucks for links. No I did not post four links. *sigh*

Ignore Amazon's image for part number 172-2287. It's the correct part.

Last edited by GXP25; 03-20-2013 at 12:37 AM. Reason: Bad forum.
Old 03-20-2013, 11:38 AM
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I really want a set of these for my impala!

Black with SS logo! or the deer antilope thingy....
Old 03-20-2013, 06:38 PM
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Can you give us some updated picture plz.
Old 01-27-2015, 09:17 PM
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Necrothread FTW

How did all this work out? I'm actively contemplating the swap next time she needs brakes.
Old 01-27-2015, 09:30 PM
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You'll love the brake upgrade. I have it on mine as well





Big Brake Kit-qegn7jj.jpg
Old 01-28-2015, 07:42 PM
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I don't have logos on mine is there a certain time that they didn't have them I got 08 Grand Prix gxp
Old 01-28-2015, 07:44 PM
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Default Brakes

Oh and I'm in on brake thing just tell me how much and where to send pymt
Old 01-29-2015, 05:55 AM
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Originally Posted by superglide9375
Oh and I'm in on brake thing just tell me how much and where to send pymt
What?!
Old 01-30-2015, 10:46 AM
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Thought it was a group buy
Old 01-30-2015, 10:52 AM
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Default BRakes

went to amazon good deal on both calipers and brake hardware 243 for the front-looks like they have rear to just silver with cad logo
Old 01-30-2015, 01:19 PM
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Originally Posted by superglide9375
went to amazon good deal on both calipers and brake hardware 243 for the front-looks like they have rear to just silver with cad logo
I got camaro ss brembos, so all I needed was washers to get the pad spacing right. All I used was a auto zone 6" hard line and union and a zzp extended length gxp braided line. And the two washers mentioned earlier.
Old 02-06-2015, 07:28 PM
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Originally Posted by 91parkave
I got camaro ss brembos, so all I needed was washers to get the pad spacing right. All I used was a auto zone 6" hard line and union and a zzp extended length gxp braided line. And the two washers mentioned earlier.
is this just front or rear too u did all the same way?
Old 02-10-2015, 05:28 PM
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So will this set up work on tye impala ss? Cause im looking at getting a 06 ss. But i wont im not going to get it and just find a gxp ive had a set of the cts v calipers sitting around for to long!!
Old 02-10-2015, 07:13 PM
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Originally Posted by superglide9375
is this just front or rear too u did all the same way?
jjust running fronts gxp25 has the baller *** 6 piston front 4 piston rear setup.

Originally Posted by 96RamAirTA
So will this set up work on tye impala ss? Cause im looking at getting a 06 ss. But i wont im not going to get it and just find a gxp ive had a set of the cts v calipers sitting around for to long!!
it'll work you just need to check your wheel clearence. For the impala you'll probably need some wheel spacers
Old 02-10-2015, 07:22 PM
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Thats with stock 18s right i could find some gxp rims then the world would be right
Old 02-10-2015, 07:41 PM
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Yeah youll need 18
Old 02-10-2015, 10:40 PM
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And will it fit 04-05's grand prix amd impala ss?
Old 02-11-2015, 01:42 PM
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Originally Posted by 91parkave
jjust running fronts gxp25 has the baller *** 6 piston front 4 piston rear setup.
He does? I haven't seen it. He still has 2006 cts-v calipers in his sig which are still 4 piston fronts.
Old 02-14-2015, 05:45 PM
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91parkave u should post some good pics of yours.


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