My guess is it's glass, with an 'O' ring on top of it, and then the body of the master cylinder swaged over. That will be an interesting repair if you can manage it. Can you post a macro super-close-up photo of it ?
Steve
"I am a licenced motorcycle instructor, I agree with dangerousbastard, no point in repeating what he said."
"read what Steve says. He's right."
"What Steve said pretty much summed it up."
"I did axactly as you said and it worked...!!"
"Wow, Great advise there DB."
WTB: Hyosung bikes or going or not.
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