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Discussion Starter · #1 ·
just wondering if it is worth installing and how much can i expect to get out of it?

my sled is a 99 z 440 and was thinking about puting in piston and rings from a fan cooled 440 snow pro or maybe even a zr 440 if they fit.

i ride alot with 2 guys who have zr 580s and when we race, i stay right next to them till about 50 then it's bye-bye (i have a clutch kit install which is why i think i can stay with them till then).

just looking for a little more all around.

thanks for your help

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