05 YZ 450 exhaust.

3 replies to this topic
  • BEE5S4

Posted October 07, 2009 - 06:20 AM


ok, im new here so be gentile. i have a bone stock 2005 yz 450. i mostly ride mx tracks. i am an average rider and looking for a slip on exhaust to replace the bulky stock one. i know they make tons of pipes for these bikes . i just want to know what is a popular/good exhaust to go with. and is it a bolt on and go or does it have to be jetted after?

  • got5steelman

Posted October 07, 2009 - 12:31 PM


The choices are endless, but it will have to be re-jetted, usually richer. I have an 05 also, I started with a White Bros E2, it was decent but the rivets kept coming loose and was real loud, I finally installed steel rivets to cure the problem. Right now I am running the Big Gun Evo X. It is sweet, it has a removable spark arrestor and quiet core in the end cap.

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  • thmperpower450

Posted October 07, 2009 - 08:02 PM


I bought an FMF Anodized Ti Powercore for my 08. Helped out throttle response and power as well. Pipe does get a bit loud and has a removable spark arrestor. Overall im pretty happy with it and it looks good too. I found no need to tune the bike at all. copy the link below and have a look for yourself.


  • BEE5S4

Posted October 08, 2009 - 06:34 AM


I was leaning towards the fmf 4.1 or a mrd. thanks for the input

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