04-15-2021, 11:54 AM
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Join Date: Apr 2020
Posts: 67
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166fmm 6 speed engine
I have been searching for an extra 165fmm engine for my x22R to do performance mods to and then swap it out for the stock one. I keep coming across the 166fmm 6 speed engine that says it has better performance. Does anyone know anything about the 166fmm? Is it bigger, faster, better gear ratio etc?
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