Hi all, okay so I was changing my rear pads today and my caliper pistons seem to be in bad condition, and in this state wont go back in the cylinder beyond the corroded section (naturally). So is there anyway to get these pistons in usable condition again (soaking in something to get the corrosion off maybe?)
Thanks

are they pitted or is it just dirt?

if its just dirt try a polishing wheel if its pitting it would be new ones for me ..

No doubt someone will say they can rescued but those apart from being rusty have been chewed by a pit bull new ones probably best bet.

Im not entirely sure, I guess I'll will try get them as clean as I can and post another pic. Thanks for the replies.

They are finnished mate,Throw them in the bin.
Go to ebay and get a caliper.

hunter wrote:They are finnished mate,Throw them in the bin.
Go to ebay and get a caliper.

+1^

+2 their scrap pal, just remember you cannot skimp on any brake parts, they're the most important part of the bike!

V4beermonster wrote:+2 their scrap pal, just remember you cannot skimp on any brake parts, they're the most important part of the bike!

Well, besides the tires...

They are absolutely fucked.

I pulled mine out and they weren't 10% as bad as that but I still replaced them! It's your brakes man, you don't want to be overrunning a bend at 100mph and regretting not coughing up a few notes for new parts!

And if the pistons are that bad you'll need new seals and a very good clean up too!
Have you checked the front ones?...........