Aftermarket Front Brake Identification? (Page 1/1)
Kitopher MAR 20, 08:31 PM
I am attempting to replace my rotors and pads on all 4 corners.
The rotors are obviously not original, as they are drilled, and noticeably thicker than stock.
My concern stems from the caliper, which also appears to not be stock, probably to accommodate the larger rotor.
I bought the car with these brakes on, and the owner before me said they were like that from the owner before him.
I would love some help identifying these rotors/calipers so that I can replace the pads and anything else accordingly with parts that fit.

The caliper does have some stamped numbers, WN4, 339, 931, 127, 932, 2?5,108.
I have no idea what these mean.
This images is larger than 153600 bytes. Click to view.
This images is larger than 153600 bytes. Click to view.
These are the pads that came off it, they are noticeably different than the stock ones sold at autozone or the fierostore.
This images is larger than 153600 bytes. Click to view.

This is the rotor, it has no visible markings of any kind.

------------------
Kit G

cartercarbaficionado MAR 20, 08:39 PM

quote
Originally posted by Kitopher:

I am attempting to replace my rotors and pads on all 4 corners.
The rotors are obviously not original, as they are drilled, and noticeably thicker than stock.
My concern stems from the caliper, which also appears to not be stock, probably to accommodate the larger rotor.
I bought the car with these brakes on, and the owner before me said they were like that from the owner before him.
I would love some help identifying these rotors/calipers so that I can replace the pads and anything else accordingly with parts that fit.

The caliper does have some stamped numbers, WN4, 339, 931, 127, 932, 2?5,108.
I have no idea what these mean.
This images is larger than 153600 bytes. Click to view.
This images is larger than 153600 bytes. Click to view.
These are the pads that came off it, they are noticeably different than the stock ones sold at autozone or the fierostore.
This images is larger than 153600 bytes. Click to view.

This is the rotor, it has no visible markings of any kind.




do me a favor and measure the brake rotor diameter. it'll help alot to identify what caliper you may have
cartercarbaficionado MAR 20, 08:43 PM

quote
Originally posted by cartercarbaficionado:

do me a favor and measure the brake rotor diameter. it'll help alot to identify what caliper you may have


i THINK those are beretta calipers actually. see if the pads reccomended for that swap fit
edit:i am wrong, that is a 88 grand am caliper here are your pads
https://www.autozone.com/br...set-mkd289/90029_0_0

[This message has been edited by cartercarbaficionado (edited 03-20-2025).]

Kitopher MAR 20, 09:33 PM

quote
Originally posted by cartercarbaficionado:

i THINK those are beretta calipers actually. see if the pads reccomended for that swap fit
edit:i am wrong, that is a 88 grand am caliper here are your pads
https://www.autozone.com/br...set-mkd289/90029_0_0




Would the rotors also be from a grand am then?
I need new bearings n whatnot so gotta make sure I get the right one of those too.
Also thank you so much, that was impressively fast!
cartercarbaficionado MAR 21, 06:34 AM

quote
Originally posted by Kitopher:


Would the rotors also be from a grand am then?
I need new bearings n whatnot so gotta make sure I get the right one of those too.
Also thank you so much, that was impressively fast!


probably? see what other people do for a grand am swap as im not too familiar with it
richard in nc MAR 21, 06:07 PM
the grand am swap uses a stock modified fiero hub.the hub should be seperate from the rotor.