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Join Date: Feb 2010
Posts: 359
SO I kinda got lost reading different topics and posts.... Could someone confirm...
Would a '96 gxr Nissin master cylinder work or is the equivalent for my bore for my '99 sporty?
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Join Date: Aug 2009
Posts: 2,373
Look on your sporty MC and it'll tell you the bore size. You'll have to take it off of the handlebars. Then convert that to millimeters. 25.4 mm = 1 inch.
ie 14mm would be
14 divided by 25.4 = .55
9/16" would be
9 divided by 16 = .56
Also reread the posts about changing stuff over. Fluid types and such. All of the required info is there for you.
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Join Date: Aug 2012
Posts: 2,679
Does anyone know off the top of their head, if the Nissin master cylinder is a 1 inch or a 7/8's fitment? I'm going to do this mod, just want to know if I'm going to have to do some drilling and boring. The mini liquor bottle instead of the clear tube is Total Recall tits.
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Join Date: Aug 2009
Posts: 2,373
I won't be a total dick and tell you to just scroll back a couple of pages, but if you would have taken the time to read the whole thread or at least a couple of pages of it towards the beginning you would have found the answer. 7/8"
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Join Date: Aug 2009
Posts: 1,810
I'm runnin a Nissin 17mm bore FRONT M. C. off of an '06 Gixxer, but for my REAR brakes. (after a little fabbing)
Mine uses DOT4, * I'm using It with an 11/16" Caliper & It works Xlnt. Got it dirtcheap on fleabay.
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Join Date: Aug 2012
Posts: 2,679
I'm glad you weren't a total dick, I read the whole thread several weeks ago; but didn't remember the size. Thanks for the kind reply though. I know it was a dumb question, but at times a quick dirty response from a post is faster than a search engine.
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Join Date: Jun 2011
Posts: 167
Okay been through here twice and on the web looking around and I'm concerned about the set up I have been working on. I was planning on using to sport bike rear m/c each one to power a 6 piston tokico caliper. but after reading this thread and looking I am a bit concerned that the bore size of the m/c is a bit small. Both of the m/c's I have are stamped 1/2". Can anyone confirm this? also I found this chart but not sure it is correct either?
2 pot single caliper: 9/16 bore.
2 pot dual calipers: 9/16 or 5/8 bore.
4 pot single caliper: 9/16 or 5/8 bore.
4 pot dual caliper: 11/16 or 3/4 bore.
6 pot single caliper: 9/16 or 5/8 bore
6 pot dual caliper: 11/16 or 3/4 bore.
I read earlier on in this post, that someone said being off by 1/6 on the bore size would not effect your stopping ability. true or not?
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Join Date: Jul 2012
Posts: 139
So is this possible to use on my stock 81 xs650 brake caliper? I would assume it is as long as I use a 9/16 bore and get the right size tube for my MC?
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Join Date: Dec 2012
Posts: 23
Quote:
Originally Posted by austintylerr
So is this possible to use on my stock 81 xs650 brake caliper? I would assume it is as long as I use a 9/16 bore and get the right size tube for my MC?
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Join Date: Dec 2009
Posts: 4,197
Most of the front master cylinders I've run into from sport bikes are 1/2 bore and they run two four piston calipers. As far as using a 1/2 on your Honda cruiser, if the bore size isn't cast into the surface of your stock mc, you'll have to contact the parts dept. of your local dealership and find out what it is.
For example. I have a 1/2 bore nissin rear mc that should be capable of operating two four pot calipers. Much to my dismay I found out that it won't work on a one piston banana caliper. Once you know what you have you'll know what you can replace it with. Hope that helps.