So I noticed you can buy New calipers on Rock for the 84/87 fiero.

Has anyone used them ?

I was looking at them the other night. It looked like they had plastic pistons. I’m interested in other people’s experience as well.

Plastic piston's, someone sell me on that .. lol

quote Originally posted by hunter29: Plastic piston's, someone sell me on that .. lol

Aren't the originals plastic, the ones gm originally installed? Sure metals better, but it's not "cheap" or "junky" if that's the original design.

Edit, yeah pre 88 front ones are plastic, rear are metal, have to be for the screw parking brake mechanism, I would imagine the replacements are also metal. The plastic is cheaper to make, and insulates the brake fluid from the heat of braking.

[This message has been edited by 1985 Fiero GT (edited 05-06-2025).]

Removed

[This message has been edited by hunter29 (edited 05-06-2025).]

How about that, I had no idea...

https://safebraking.com/tec...ns-phenolic-plastic/

quote Originally posted by hunter29: Anyone know what other cars had these calipers and what year they stopped using them? Are the rear specific to the fiero?

i think they fit one other car.rockauto has a list.my rear calipers came from rockauto but last year.

Last fall I bought rear calipers from Amazon and was worried they would be junk. Wrong they seem to be high quality and work perfect. They even had the original GM part number on them. they aren't rebuild they are new and I believe they are built by GM in China. GM has several plants in China.

I was going to ask would you buy these new or get rebuilt calipers from a place like calipers on line

Wondering which would be better in the end..

[This message has been edited by hunter29 (edited 05-07-2025).]

quote Originally posted by hunter29: I was going to ask would you buy these new or get rebuilt calipers from a place like calipers on line Wondering which would be better in the end..

Just for reference new rear Fiero calipers 84-87 are now being sold on eBay and Amazon. I ordered a set ($123.00) and have yet to install them but they look well made. They are Chinese of course but at least we have replacements available..

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

Thanks for posting that.

I's been 8 months since I got my rear calipers from Amazon and they are working perfect. sleek