Very simple. Because we do it right. The way the factory did it. The way it should be done for many reasons. Here's some common questions:
"Why not just "paint" the calipers?"
1. Paint only protects the outside of the caliper... not very well and only temporarily.
2. Paint comes off with odd things like... brake fluid and brake cleaner.
3. Zinc is the factory finish and has superior corrosion protection.
4. Zinc re-plates the bore, which it probably needs it by now.
Rebuilders that paint calipers do so because zinc is expensive. They can easily slap on a coat of paint on "in-house" and it speeds up the process. They can even call it cool things like "Ceramic" or "Polymer" etc. If you want your calipers done right they will need to be zinc coated like the day they left the ATE factory.
"Why not buy the el cheapo mass-rebuilt, assembly line calipers other parts vendors are pushing on me?"
1. Those things cost those vendors $35.00 each. They're pushing them because there's big money to be made off you.
2. The caliper bodies are vibratory tumble polished. They put them in a huge bin of media and polish all of the finish off them. Then they get an oil bath. That's it! There is "no" protective finish on them at all! Give it a few years and your bargin calipers will literally be covered with rust. We've seen hundreds of them. The ones that come from the big-box rebuilders are almost unusable in a few short years.
3. We've seen pistons in backward. Your piston step needs to be set at a precise 20 degree angle to help eliminate pad squeal.
The real benifits of zinc is the sacrificial coating properties. Zinc, by nature, will attract oxidents and literally save the metal it is protecting. Even if it is scratched off the zinc will continue to protect the steel it encapsulates. We've restored 46 year old calipers and have them come out looking brand new. All thanks to the protective properties of the zinc coating applied those many years back.
Zinc also helps protect your piston bore. While the bore is not a sealing surface, it can get wear from the piston. Wear, lack of fluid changes and rusty caliper shellac will cause a caliper to stick. This usually happens just above the seal where moisture can get in. Other rebuilders use a hone to clean out your caliper bore. We recommend against that as it leaves a fresh steel on steel surface (bore and piston). The zinc bath leaves a perfect factory finish on the inside of your caliper bore. All in all, the process will clean and replate the entire caliper and make everything good for another 30-40 years.
Now you know what we mean when we say "We don't rebuild your calipers... we restore them."
If you don't see what you need listed here please send us an e-mail at firstname.lastname@example.org or call (855) STOP-101 (855-786-7101) We can usually get what you need within 3-4 business days.
If you don't see your model listed here please send us an e-mail at email@example.com or call (855) STOP-101 (855-786-7101). We can usually get what you need within 1-2 business days.
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