best pipe and piston on EX
Jul 19, 2000 | 06:58 PM
#1
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Trailblazer
Joined: Feb 2000
Posts: 61
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I have narrowed down my pipe choices to the Curtis Sparks system or Noleen. Does anyone have any experiences w/ these? By the way this is for MX racing only. Also, how much power gain am I looking at with a 12:1 compression piston .80 over? Wouldn't that make it a 419cc? Also adding a race cam with that? I believe some of you who's names I have forgotten have this setup. I would like some feedback on it. Any help would be appreciated.
Jul 19, 2000 | 07:15 PM
#2
Pro Rider
Joined: Jul 1999
Posts: 213
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The Curtis Sparks system is good but his pipes always seems to work best with his engine mods. I kinda like TC stuff myself, but it's mostly personal opinion. Just so you know 417cc's is maximum to run and still be legal by AMA rules to run a 250 class with the 250R's. Good Luck
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