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Rear tire rubbing on exhaust silencer....WTF?

14148 Views 25 Replies 9 Participants Last post by  sguyer
Back in it's dirt days, I ran a 120 dirt tire, which always rubbed on the stock silencer a little bit. (pictured below). I had hoped that with the smaller diameter Supermoto wheel, it wouldn't be as bad.....well I was wrong!

The subframe is good and straight, and I even spaced the silencer out using a couple of 1/2" nuts as spacers, still rubbing, bad. I even stiffened up the shock a little bit, and it's still rubbing.

Outside of making the rear so stiff that I'll hate it, anybody out there have any suggestions? Of course, me losing weight, or spending more that $7 is out of the question :laughingr
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buy it and tweak that.

i do the same thing with most of my bike parts.. worse case, you lose $20 or whatever you paid for it.
Problem solved!!

I bought a complete exhaust from an 06 SMR and installed it last night. The head pip has the proper offset in it, and the silencer came with all the right spacers. Bolted up to my 04 SX no problems. Everything looks like it will clear OK now.

Just wanted to bring closure to this, as somebody may be searching the threads and looking for the answer to the same problem!

Thanks for all your help guys!
I bought a complete exhaust from an 06 SMR and installed it last night. The head pip has the proper offset in it, and the silencer came with all the right spacers. Bolted up to my 04 SX no problems. Everything looks like it will clear OK now.

Just wanted to bring closure to this, as somebody may be searching the threads and looking for the answer to the same problem!

Thanks for all your help guys!
Just an FYI, the tire rubs even on a stock SMR- check the marks on my 560 (and those were just from compression loads when cornering since I had not jumped the bike at that point yet).
View attachment 45701
Damn you for pissing in my corn flakes!!!:laughingr

Got the bike in the back of the truck for some track time tonight. Thanks for ruining the last few hours of euphoria I had before I would have learned this myself!:lol:

Well, it's still 10x better than how it was rubbing before, so I guess I'll take it!


Just an FYI, the tire rubs even on a stock SMR- check the marks on my 560 (and those were just from compression loads when cornering since I had not jumped the bike at that point yet).
View attachment 45701
Damn you for pissing in my corn flakes!!!:laughingr

Got the bike in the back of the truck for some track time tonight. Thanks for ruining the last few hours of euphoria I had before I would have learned this myself!:lol:

Well, it's still 10x better than how it was rubbing before, so I guess I'll take it!
Always willing to help, just let me know if your corn flakes get to dry again. :thumbup:
On a good note though the stock SMR doesn't rub near as bad as the pics you posted earlier. Yours was rubbing nearer the swingarm pivot than my SMR (my buddies 450 SMR rubs the exact same as my 560 too BTW) which tends to rub towards the center of the can and only at extreme bottoming loads. I don't know how often yours used to rub so you may have lessened the frequency as well as severity with the SMR header / can.
Since I've been jumping it the black mark is much more pronounced now, although it doesn't seem to effect tire wear any. My main concern is that it rubs the head of the bolt on the can, which I'm sure can't be good for the tire, but it doesn't gouge the tire as far as I can see.
A little heat and a pair of vice grips on the welded tabs should do the trick. Just don't bend them too far outward!
Lay bike on right side, stand and bounce on silencer, tabs are bent in a bit from fall, did mine, work great , gotta have that feel, you don't want to break anything
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