Wr450 spark plugs

4 replies to this topic
  • jfluet32

Posted September 23, 2010 - 04:18 PM


Has any ever used the NGK racing plug in this bike ?

  • William1

Posted September 23, 2010 - 05:00 PM


Some have, but the stock plug is more than adequate. A racing plug will do nothing but cost you more money.

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  • wanawakeboard

Posted September 23, 2010 - 05:13 PM


I am using an irridium plug and its working great, started even without the choke cold... had never done that before!

  • William1

Posted September 24, 2010 - 03:28 AM


An iridium plug will not overcome the requirement for extra fuel when cold. A new plug will fire off a bike that is jetted too rich though.

  • ASternad

Posted September 24, 2010 - 11:35 AM


I put in a irridium plug last ride and starts are easier (09WR450), could just be a new plug though.


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