Anybody got a line on an aftermarket replacement front brake reservoir? / GS1100GK

[Guest]

Anybody got a line on an aftermarket replacement front brake reservoir? Bought a knockoff on ebay that was from china a few years back. The other day I was looking a the fluid level viewport and it looked like it had cracks in it, sure enough it just caved in! They used plastic instead of glass, surprise surprise....
Thanks!

[chuck hahn]

Some on Ebay. OEM ones at that

[deepseadiver84]

yea i don't see anything other than old used ones and non oem chinese ones made for single disc..

[Grimly]

As you've found, knock-off brake reservoirs are not to be trusted with your life.
I've been fitting Honda Deauville (NTV 650 / 700) brake master cylinders to mine for the past couple of years and they work very well.
5/8 bore, with a modern adjustable span lever and they're just so much nicer to use than the originals anyway.
I'd sooner fit a good used original part, with a rebuild kit if necessary, than trust the cheap junk that's on the market.

[bwringer]

In the parts diagram for the '82 GK, the master cylinder does not have a separate reservoir.

So what's on your bike, exactly?

If you have the original, you can replace the sight glass easily -- you can get high quality replacements on fleaBay or Amazon (the 18mm OD is almost universal). It does take a good bit of force to press the new one in, so be very careful and thoughtful about what you're doing. I pressed mine in with a vise, using one vise jaw inside the reservoir and the other against the window, everything padded with leather scraps. It's been working great for a few years.