2006 yz450 transmission in a 2005 yz450

2 replies to this topic
  • johno2008

Posted March 18, 2013 - 02:26 PM


I was just checking to see if anyone knows if a 2006 5-speed transmission will fit into a 2005 case assembly.

We ride in the winter quite often and a little more top speed and a lower 1st gear would really help.

Thanks for any and all your help

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  • grayracer513

Posted March 18, 2013 - 02:45 PM


Nope, not possible. The '06 and later trans is 12mm wider.

However, the COMPLETE trans from an '03-'06 WR450F will fit:


  • johno2008

Posted March 19, 2013 - 02:20 PM


Thanks for your help.

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