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Discussion Starter · #1 ·
I have an 03 kfx400. I was thinking about replacing my piston with a wiseco high compression piston. I was wondering whats the benefits with the 13.5:1 high compression piston? And any other mods required? Also do you know of any step by step videos on how to change the piston? I have a service manual with step by step directions, but I'm just trying to get a few more to look at. Greatly appreciated.:)

Travis
 

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changin the piston isnt that bad the downfall is you have to get new rings but with a new piston you should get a set but then you have to buy a new head gasket but other than that you dont have to have any special mods but i dont kno how much you could tell if its all stock but if you have an exhaust and jetted you should be good to go
 

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Discussion Starter · #3 ·
My piston rings are shot anyways. So i figured I'd just spend the extra money and get something good. Anyways, I figured thats all I needed was just a new head gasket. I have an exhaust and it's rejetted, but thanks alot for the input.

Travis
 
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