Bending subframes


7 replies to this topic
  • RM142

Posted January 12, 2009 - 04:36 PM

#1

07 Y450.... I think I have replaced 3 of them in a year and a half. It seems every time that big muffler slaps down at all , it tends to tweak that right lower legs and pisses me off. :thumbsup: Anybody else having this kind of luck or am I just special.:p

  • Wes Woodin

Posted January 12, 2009 - 07:55 PM

#2

07 Y450.... I think I have replaced 3 of them in a year and a half. It seems every time that big muffler slaps down at all , it tends to tweak that right lower legs and pisses me off. :thumbsup: Anybody else having this kind of luck or am I just special.:p

I did tweak mine in a big get off. Other than that, never had a problem. I do have a slightly bent subframe. Dont know what to do with it.

  • Tumblin

Posted January 12, 2009 - 08:20 PM

#3

THREE SUB FRAMES??

You're sure it's the muffler?
There's got to be more junk in the trunk than the weight of that muffler tweaking your ride.

  • fatrussian

Posted January 12, 2009 - 08:23 PM

#4

huh, no offense but it sounds like yamahas have weak sub frames cuz when my friends on yamahas crash moderatly hard they bend sub frames:moon:

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  • Johnny_On_The_Spot

Posted January 12, 2009 - 08:26 PM

#5

yeah i bent the one on my 125 a few times. Took a 4' pry bar and straightened it out though. Took all 170 pounds of my weight to straighten it too!

  • Family Man

Posted January 12, 2009 - 09:36 PM

#6

My local shop bent mine back pretty close to straight and didnt charge me anything. I bent it back closer with a 2x4 by taking all the plastic off and laying the bike on its side with the board placed on top of the wheel and the subframe. It still rubs alittle.

  • Ga426owner

Posted January 13, 2009 - 05:51 AM

#7

07 Y450.... I think I have replaced 3 of them in a year and a half. It seems every time that big muffler slaps down at all , it tends to tweak that right lower legs and pisses me off. :thumbsup: Anybody else having this kind of luck or am I just special.:p


you are special I think....
I have crashed hard several times including a few loop outs/end over ends
My subframe has been bent but I have been able to rebend it back to almost 100%
You must crash harder than most if they are unrebendable
What are you doing with the bent subframes - I bet they can be fixed easily with a prybar or the Parktools subframe rebender and sold on ebay for some $$relief

  • YamaLink

Posted January 13, 2009 - 08:39 AM

#8

I used to bend my 05 subframe like it was made of cheese wiz. But no such bad luck since, and I believe my crashing style/speed has improved to the point where I'm supposed to be replacing subframes more. :thumbsup:

Is your subframe installed properly, meaning, are the bolts torqued down evenly. One time I tighted down the muffler side more than the other side and it was juuuust enough to make contact repeatedly.





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