Join Date: Apr 2014
Location: Enid, OK
I Ride: 2007 V-Star 1300, 2014 ZX-6R, 1986 Yamaha YZ250 (bored & stroked - 2 stroke)
I have the Street Slayer. It comes with a baffle. I took it out. If you need it even quieter, M4 sells a Stage 2 dB killer, but the one that's in it should be fine. The other M4 is a damn megaphone. This is actually a muffler. Go for it. $319 shipped us what I paid for it. If it's too loud, call M4 out of Dallas and they will hook you up with a Stage 2, but at that point, you're really robbing the power. I saw the dyno comparison charts between no baffle, stock baffle (stage 1) and Stage 2. I was actually thinking of putting my Stage 1 back in, but drill the hell out of it just to quietest down a little. It's the loudest 600cc class bike in town. MJS Headers (no catalytic converter), Driven Engine Block Off Plates, FlashTune, Bazzaz Z-Fi, Bazzaz Z-AFM, K&N RACE-SPEC air filter (not the street filter), all the foam taken out of the air cleaner and intake. Doesnt help thatbthe slip-on also replaces the exhaust valve setup too. If ypu can fund a good slup on that retains that, then that oughta be quiet.
But Yeah. It's loud, but like I said, I could quiet it down with just one thing. Everything else makes it loud, but yes, it is one of the louder exhaust slip-ons. Yoshi makes a quiet slip on. They're all quiet to me. Overpriced is my opinion. Just order it straight from M4 and have them include both baffles