best upgrades for a 1999 yz400f


2 replies to this topic
  • wimbrogen

Posted November 20, 2007 - 11:51 PM

#1

I love my bike its stock except a uni filter what are the simplest cheap mods to get more power thought the whole power band?

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  • 1rkcooper

Posted November 21, 2007 - 06:41 AM

#2

The best mod in my opinion is the 450 cam swap to rid you of the decompression lever and the starting procedure. Do the work yourself and it will cost you between $100 - $150 to do.

  • 642MX

Posted November 21, 2007 - 06:52 AM

#3

I love my bike its stock except a uni filter what are the simplest cheap mods to get more power thought the whole power band?


A high compression piston and a set of Hot Cams will wake it up. :thumbsup:





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