stock powerbomb header - what a joke!!

6 replies to this topic
  • markryam

Posted March 22, 2008 - 07:40 AM


well i had the back end off the 08 yz450f this morning, and i thought id shine a torch inside the header and see if its lean/rich. to my amazement the powerbomb on the stock header has a pipe inside welded in so its literally a straight through pipe!!!!!

this to me is a complete con. you think your getting a nice good header so you go out and buy just a slip on silencer - and in reality your not getting exactly what you thought you were!!!

how dissapointing.

so i now have a white bros slip on for sale - as my full akrapovic system is on it's way!


  • sirthumpalot

Posted March 22, 2008 - 08:45 AM


Was the pipe in the middle perforated? The power-bomb type headers I've seen have all had pipes right through, but the pipe is perforated.

  • markryam

Posted March 22, 2008 - 09:16 AM


straight through solid pipe.:confused: :excuseme:

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  • KJ790

Posted March 22, 2008 - 11:57 AM


The straight through pipe actually has a couple holes drilled in it. The new FMF poerbombs are the same way. The first powerbomb FMF came out with had a perferated core, then they redesigned it a couple years ago and now it is a straight through pipe with 4 small holes drilled in it.

  • markryam

Posted March 22, 2008 - 12:37 PM


its deffo straight through - i checked with a flex head mirror and a flexi torch.

  • Whyzee429

Posted March 22, 2008 - 06:23 PM


that's definitely a first. mine has holes.....some small ones

  • Stepdaddy

Posted March 22, 2008 - 07:50 PM


All I need now is proof...

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