stock 05 wr450 exhaust mod

2 replies to this topic
  • crooks420

Posted July 15, 2005 - 08:08 PM


I just got a new 05 WRF 450, and am wondering what I can do to the stock exhaust..... i want to get as much juice from it, but still keep it quiet. Can I just remove the inner tube? How is this done, do I grind out the two rivets?? Or do I need to get a new end cap?


82 Yamaha XT 550
87 Kawasaki KLR 650
05 Kawasaki KLR 650
05 Yamaha WRF 450

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  • MattyH

Posted July 20, 2005 - 04:04 AM


by inner tube do you mean the perforated core?

if it is the perf core that you're referring to then i wouldnt pull it out and toos it, but i would change the core to a different ratio of metal to holes. 60/40 Perf core is apparently the go.

  • nevadaoutlaw

Posted July 20, 2005 - 07:53 AM


I have a Promoto Billet insert I will sell you that does a nice job.


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