Ok guys, so I have a 09 xp X 163 I weigh 210lbs and ride around 4500 to 7500ft I want to put on a rktech head with dual ring piston kit, as well as a rooster built clutch kit. Whick one do you guy think will give me the best bang for my $$$$ and which one would you buy first if you could only afford one { just bought a new house 'wife needs new couches ect} thanks
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