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400EX
Posted On: 09/14/2007 19:07:45
anyone out there have a 400EX, I am thinking about boring it out to a 440, is it worth the money and how much faster will it run ?


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Viewing 1 - 1 out of 1 Comments

  From: Crusty72
09/27/2007 19:52:55
Don't just bore it out.... go with a good cam, header and slipon(FMF), re jet and a K&N air filter. The only other thing is head work... re valve, polish and port...