99 yz 400f


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  • jordan__2014

Posted March 03, 2014 - 04:05 PM

#1

Hey just picked up the bike so far I have rebuilt the forks and replaced most of the plastics now I am looking at doing the motor and exhaust . I ride in the woods mostly . Lots of ruts and mud I was wondering if any one has used a high compression piston , and if so were there any down sides to it . I am looking to gain as much power as possible and still keep the bike reliable any help would be great thx





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