Grizzly 660 Muffler Mod. Mountain West
Mar 8, 2003 | 09:19 PM
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Weekend Warrior
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Grizzly 660 Muffler Mod. Mountain West
Has anyone done the muffler mod from Mountain West Performance. It involves a kit for $60.00 , drilling some holes in the stock muffler baffle and a new end cap. Does it improve performance? How much louder is it? Do you need to rejet? THanks ...
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