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.


These are the pads that came off it, they are noticeably different than the stock ones sold at autozone or the fierostore.


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

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Kit G

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. These are the pads that came off it, they are noticeably different than the stock ones sold at autozone or the fierostore. 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

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!

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

the grand am swap uses a stock modified fiero hub.the hub should be seperate from the rotor.