tony04 Posted June 27, 2016 Share Posted June 27, 2016 Hey just wanted to see where people were ordering their m4 slip on from. Thinking about pulling the trigger soon. Also does anyone know the decibel levels with and w/o the db killer? Thanks fellas Link to comment Share on other sites More sharing options...
berettatrio Posted June 29, 2016 Share Posted June 29, 2016 I got mine of of amazon.com. When I got mine I think they only had a couple left. I love mine. It makes the bike sound sooo mean! Its an easy install too. Link to comment Share on other sites More sharing options...
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