WR parts on YZ

2 replies to this topic
  • SteveKing84

Posted January 30, 2013 - 03:38 PM


Anyone put a WR exhaust on a YZ? I'm really contemplating putting a 05 wr450f exhaust on my 04 yz450f. I need the spark arrestor and I'm not too worried about the power loss. Would rejetting be needed?

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  • DMC707

Posted January 31, 2013 - 12:20 PM


Re-jetting is needed almost when you change brands of air filter oil on these things --- LOL . I would assume a re-jet would optimize things

  • Moscow Roost

Posted February 10, 2013 - 05:19 PM


Not certain about WR to YZ, but I took a full exhaust off an 09 YZ and put it on my 08 WR and had no issues at all (except for more power). I wanted the shorty muffler and went with a PMB end cap for trail riding. If all you want is the spark arrestor for your YZ, buy a PMB from RM MC/ATV. http://www.rockymoun...rrestor-End-Cap

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