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YFZ450 High Compression piston???

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Old Mar 15, 2004 | 03:40 PM
  #11  
garyc660R's Avatar
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Default YFZ450 High Compression piston???
Going from 11.9/1 too 13/1 may yield 1-1.5hp max. Not worth the trouble and expense of race fuel IMO.
 
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