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How to Quiet my Cafe Racer Down

1776 Views 14 Replies 7 Participants Last post by  brad black
(This is my first time posting here) but long time Cafe Racer enthusiast.

I'm looking to reduce the noise of my 2002 Susuki Savage 650 with the Ryca CS-1 Cafe Racer Kit by about 80% if possible.

Can anyone point me in the right direction on where to buy a Baffle or something to put inside of my Reverse Cone to reduce the majority of the noise that the bike makes? Not sure on which path to take or which size would be the right fit.

Reason being I live in an apartment and my neighbors cannot handle the noise of my bike.

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Megaphones are used to make things louder. If you want quiet, you're already headed the wrong direction.

If you must use one because you like the shape, it has to be full of sound damping material like fiberglass. Don't use stainless steel wool, it doesn't do jack to attenuate sound. Basically you want a perforated tube running the length of the pipe, with fiberglass stuffed in the area around it. But with a megaphone shape you lose a lot because the packing has to be at least ~20mm thick around the pipe to really do much.

I don't know what your bike looks like but if you truly want it quiet, ditch the megaphone and buy a cylindrical shaped muffler with packing in it. And don't go overboard on how big the inner pipe is, the added restriction of a smaller pipe doens' tmake nearly as much difference in power as people will have you believe. Trust me, and straight through pipe will have significantly less restriction than a stock muffler.
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desmodog is a professional in exhaust design, so he knows what's he's talking about. you need another muffler.
Not anymore, I retired yesterday! :geek: Now I'm trying to decide if I should start searching for an M900 or 1100Evo Monster as a new project bike... or sell everything and buy a toy car. But I digress.

Anyway, yeah, if it were me I'd use a different muffler. The reasons why get into a long description involving things the OP probably doesn't care about so I'll skip it.

Another thing people are doing to quiet things down is to put a honeycomb shaped substrate thingie in the pipe(s). Those are pretty much just converters with no coating on them by the way. They do broadband attenuation and might be easier to use than a baffle you put into the muffler.
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