Exhaust Flow Question

4 replies to this topic
  • deelong4002

Posted March 17, 2007 - 04:29 PM


I have a 2000 XR600 and i have heard of people grinding down those humungous welds on the inside of the exhuast header where the flange is. Is this a good idea, and will it actually do anything performance wise, or should i just leave it alone?

  • hrc1

Posted March 19, 2007 - 06:14 AM


I have the same bike, and i did it when i changed the muffler. I can't say i noticed a diff since i rejetted, went to a supertrapp, and switched filters... so that wasn't the only mod done. The welds were overly large so i ground them down and rounded them off quite a bit. I chose not to make them flush and chance weakening the weld. Flow is flow so i'm guessing there is some gain to be had.

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

Posted March 19, 2007 - 07:09 AM


Some will swear that they can tell the difference, I cannot.

  • TheCure

Posted March 19, 2007 - 12:11 PM


Some will swear that they can tell the difference, I cannot.

I couldn't tell, but I had a lot fun grinding them off thinking about all the power I was going to imagine I was gaining.

  • deelong4002

Posted March 19, 2007 - 03:14 PM


HA HA HA Thecure, i could see me doing the exact same thing, and then riding and being like "oh man this is so much better" and there being absolutely no change whatsoever

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.