WR450 5 Speed Motors

2 replies to this topic
  • longie

Posted August 04, 2008 - 07:54 PM


Are all the 5 speed wr450 motors basically the same? 04,05,06,07, and 08....thanks.....

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  • JSanfilippo

Posted August 05, 2008 - 12:46 PM


In terms of gearing spacing yes.

The 07+ models have a different primary reduction ratio which allows for a 13T front sproket instead of a 14T like the '03-'06 while having the same overall gearing


Posted August 05, 2008 - 02:34 PM


05/06 have slightly lower compression and milder cams than the 03/04. Other than that they are basically the same.


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