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TRXRIDER4567
08-09-2007, 06:50 AM
will a fmf power core 4 give a kfx 400 (05) 7 more horse.
drzoo2
08-09-2007, 07:48 AM
7 horses? No. A full pipe would give you maybe 3 - 5. A slip-on maybe 1 or 2.

z