low compression yz400

2 replies to this topic
  • yfzut

Posted April 08, 2006 - 05:27 AM


im building a quad for my wife based on a yz400f engine, and im wanting to tune it down a bit. does anybody know if a lower than stock compression piston is made and im also looking for a very mild auto decompression cam is made.

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  • NYMXer

Posted April 08, 2006 - 06:32 AM


Add an extra base gasket..........

  • One Louder

Posted April 08, 2006 - 07:39 AM


does that realy work. what does it do to the performance of the motor?

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