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Discussion Starter · #1 ·
Installed the M4 a week ago yesterday and it just made the bike come more alive! Glad I didn't spend the 800 on a full system, did it in one hour with Micky mouse tools and was a piece of cake just take your time! Couldn't be happier
 

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Are you happy with the sound? Is it too loud? I'm thinking to do the same think buy the M4. I had it in the past on my zx6r and i really like it.
 

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Great job man. I'm going to get a M4 also, but first I have to get rid of that awful rear tire I got.
 

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Going to do the M4 slip-on, smog plates, and ecu flash this offseason AKA winter. I don't want no down time!
 
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