eBay "Aftermarket" Front Master Cylinder?

Anyone try one of these yet?

FRONT BRAKE MASTER CYLINDER YAMAHA XJ700 XJ750 XS750

Seems dirt cheap. It is an auction, but they list a couple at a time, and seem to sell with 1 bid.

But, they list it as their part #111.
Yet they also sell other master cylinders for other models with same item number.
One of their other auctions for this #111
FRONT BRAKE MASTER CYLINDER FZR600 MAXIM1100 750 600 says with Maxim you must change mirrors to Honda, Suzuki or Kaw models, yet the first auction does not state that?

Looking to replace my Maxim '82 XJ750J beat up unit.
I know it brake fluid indicator in computer won't work, but it never did anyway even after rebuilding other Master Cylinder.

Anyone use usa-motorcycles-inc before, or aftermarket Master Cylinder?

Thanks,

 

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The thing with the mirrors is because Yamaha uses left and right hand threads on there mirrors, the left mirror is left hand thread and the right mirror is right hand thread. I would think that since the aftermarket cylinder is saying you have to use non-yamaha mirrors it is because it is lefthand thread on the right hand bar - thus your yamaha mirror will not thread in.


Hope that helps

Edit: I've looked at all this guys other auctions, and every Yamaha he has listed takes the 111 master cylinder. I don't know if the stock master cylinders are so interchangeable, but it is completely possible that an aftermarket piece could be.

 

Possible they are recycling the pictures. Looks like a good match and a good price. Worth the gamble in my book. Have you written them with your concerns? I've gotten responces from reputable sellers rather quickly, might be the place to start for you.

 

i got one from them around thanksgiving, i changed to flatter bars and the original had a mean lean to it
your right, they had them listed for honda kawasaki suzuki only difference being for single or dual disks, and black or silver
i just bid on the cheapest dual disk one, i think it was for a suzuki
i guess it's a generic m.c.
mine had threads on the side instead of the end, but wasn't a problem
too cold for a road test but the lever feels fine
i may get another for my kawasaki, for that price why rebuild
witch brings up the bad side, probably never find parts to rebuild it if you wanted to
i say go for it
only wish they had brake lines too

 

I would say a savy dealer should be able to hook you up with a rebuild kit for just about anything (K&L has quite a few last time I checked). So long as you know the I.D. of the cylinder bore and the stroke length, you shouldn't have any problems. Of course it doesn't hurt to bring the cylinder in and let them look at it to confirm application and fit. I agree that for the cost of the Flea-Bay unit, cheaper and easier to buy new. Not worth the hassle at that price.
Brake lines are rather easily built, pitty the ruddy lines and fittings cost a kings ransom! Galpin can hook you up Pol, just got to pony up some bucks. Figure $120 for two lines or build them yourself for $75-90. For fit and finish, you can't beat the built lines but if you are fairly apt, you should be able to build them yourself and save. Don't forget to get good Adel clamps to keep the lines from rubbing the forks.

 

I have asked seller question about mirror working, so will see what they say.

I understand the difference in left/right threads, but wondered why only some of their auctions say original mirror will not work, while most of their other auctions do not state anything about mirror. Same item #111.

Do some Yamaha's OEM from this era use same thread type for both mirrors?
The way his auctions list these, it would appear only the Maxim's use different threads.

 

Are most other bikes right hand threads for both mirrors?

Ace_Frehley seems to have stated it backwards for Yamaha.
My Maxim right side mirror is left hand thread (and left mirror uses right hand or normal threads).

Thanks for the tip on thread adaptor, but that seems like the opposite of what I would need if replacement master cylinder did not use original thread pattern. The adaptor converts stock left hand threads on master cyl to right hand threads, and includes left side (keeps right hand threads to right hand threads on that side) to keep things even in height. Ends up with both being right hand threads, which is what this master cyl will already do. Either method would require replacing both mirrors with non-Yamaha to match.

I left out the part about adding a Slipstreamer Windshield, which has attaching arms that go into "designed for Maxim" adaptor between mirror and master cyl. The adaptor would not work with non-yamaha standard threads on master cyl, since it requires left hand threads on master cyl side.

 

Your Right RobsTv, I do have it backwards, basically what I was getting at is that Yamaha's (or atleast the maxims) use different threads on each bar where as Honda's and Kawi's etc, do not.

 

Seller has still not replied to my question asking if left or right hand threads are used, and why only one of his auctions for this item #111 state you can not use original mirrors, while the others do not have that disclaimer.

With the windshield I use, it requires stock style left hand threads, so until someone else has purchased one (dozens have been sold to Yamaha owners), and can confirm left hand threads are used, I will have to skip.

Seller didn't reply, so if it is not what I need, looks like a problem returning. I have had bad luck with auctions like this. Purchased clutches for Maxim XJ750 from one dealer seller. He also had another auction listing clutches for many different Yamaha's but didn't specify XJ750. The clutches I received were wrong, and he blamed me for ordering the wrong ones. He said I needed to order the Maxim XJ750 "J" clutches, not the Maxim XJ750 clutches, and he was a real jerk about it. He said the "J" (which as we know only means it is a 1982) uses special size that no other models use. This bull from a dealer.?.?.? BTW, I later learned that the XJ750 clutches are used in the XJ750J, XK750K, and many many other models use the same clutches including I think all the 650's. The seller was just a real idiot that had no clue about parts.

Thanks for the replies, and please post back if any of you purchase one of these.

 

Hey Rob, I just bought one of these aftermarket cylinders off ebay. I guess I should read better cuz I thought you wanted to know how well it worked. I don't have new brake lines yet so I won't know for a while. I can check on that thread situation though when I get home. The part looks good. A slightly smaller oil res. so we'll see if that effects anything when the time comes.

 

Finally got a reply that I'll copy and paste here:

"Just auction updated, this master cilynder if for right hand mirrors. Yamaha uses left."