Do FMF PowerCore 4's use factory gaskets?

5 replies to this topic
  • StryfeS13

Posted June 10, 2012 - 10:57 PM


I bought a 2002 YZ426F that has an FMF PowerCore 4 fitted to it. I noticed today when I removed it that there is no gasket that goes from the muffler pipe to the header pipe. There's just a clamp.

I looked on the microfiche for the YZ426F, and the stock exhaust has a gasket there. Is it supposed to be there? It doesn't seem like there is enough room for a gasket between the two pipes.

#12 on the diagram

  • grayracer513

Posted June 11, 2012 - 06:57 AM


No gasket. There usually isn't a clamp, either. most aftermarket pipes are slip fits.

  • StryfeS13

Posted June 11, 2012 - 12:02 PM


Well the fmf powercore has little slots in it you know, like it should be clamped down or something.

It leaks a little from the connection between the header pipe and muffler. Will the carbon build up seal it or something?

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • StryfeS13

Posted June 11, 2012 - 06:52 PM



  • briangriff321

Posted June 11, 2012 - 08:26 PM


Put a little high temp rtv in there

  • StryfeS13

Posted June 11, 2012 - 10:05 PM


What about that copper spray stuff?

Related Content


Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.