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Discussion Starter #1
I'm looking to pump up the horses in my 02 MXZ 800, wondering if anyone here is using the RKtek head? Is it difficult to tune the sled after installing, and did it help performance? Should other mods be done with this head (reeds, etc).

Thanks in advance

SS5150
 

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IMHO it is the best mod out. I put one on my 01 800 and cannot say enough. It does not make the sled any harder to tune just more efficient, expect to drop 4-6 main jet sizes
 
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