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Identify this master cylinder

chuck hahn

chuck hahn

Forum LongTimer
Past Site Supporter
I got this off ebay as it was listed as coming off a 80 1000G. It obviously is not. Has a solid one piece construction...reservoir molded wit the rest of the body. Has a few markings and a metal reservoir cap. Heres pic of the markings. Note there is a 15 INSIDE the reservoir itself. I would like to know what it came off so i can ordr a rebuild kit. I looked at sevwral fiches nd cant find any that are like this. Everything I saw had the seperate plastic reservoirs with the oring to seal them at the body.

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It may be off a 1972-77 Suzuki GT750. The extension on it to cushion mirror vibration leads me to that best guess.
 
It seems like it wants to build pressure. Ill mount it as is and see if it builds pressure or leaks. If so it will do for now. I will probably go with a rectsangular one from a dual disc setup like an 1100 or 1150.
 
Chuck if authenticity and the hassle of rebuild bits is an issue there are lots of nice inexpensive chinese bits on Amazon.
 
main issue for me is knowing what it cae off and whether rebuild kits are available. Round or rectanguar works long as i can get kits
 
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