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I sincerely wish you the best of luck in finding a seal kit or a new rear brake cylinder.

Your bike and mine use the same piston and seal kit and I was unable to find a new one anywhere. If you do find a source please post it here. There are others who are in the same boat. I ended up shortening a new piston to make it fit. It was not an easy task but it worked.

Sometimes used ones show up on Ebay but I was worried they might be in the same or worse condition than mine.
 

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Discussion Starter · #8 ·
I have her with an old Harley guy currently and he is rebuilding the cylinder with “other parts”
His words to me were “it’s already a Frankenstein so we are just gonna keep operating” I should have her back in a week or so. I trust this mechanic 100% so I will update when she is home.
 

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Discussion Starter · #11 ·
I sincerely wish you the best of luck in finding a seal kit or a new rear brake cylinder.

Your bike and mine use the same piston and seal kit and I was unable to find a new one anywhere. If you do find a source please post it here. There are others who are in the same boat. I ended up shortening a new piston to make it fit. It was not an easy task but it worked.

Sometimes used ones show up on Ebay but I was worried they might be in the same or worse condition than mine.
found this. Not sure if the company is legit but…
 

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Yeah, Megazip listed parts for my ZN but they did not have it when I inquired. Apparently they take your money and then a week later tell you that part is no longer available. At least that's what some of the reviewers say about Megazip.

Luckily I did not place the order, and emailed them to check stock before I ordered. They responded within a few days to so, no, its no longer available.

But even if they have it, $324 USD? Yikes.
 

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I would look for a similar but newer brake cylinder and adapt it to your ZN. Motorcycle salvage yards are a good place to look. If there is one nearby, take your old one with you to find the best match. You might even find one that bolts right in.
 

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I'd really try to rebuild the original Brake Cylinder. I have an old M.G., and after buying 3 that leaked, I just honed the old one, and let the seal swell up in some Brake fluid for 5 minutes (Brake fluid makes some rubber swell). It was a real p.i.a. to get in, but it hasn't leaked in 23 years.

p.s. That MEGZIP, I wouldn't deal with them. :)
 
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