Thru Transom exhaust (mufflers) ??

[19Kona]

I am looking for something to put into the rubber exhaust hoses of my day cruiser just to take the edge off of the noise for the people sitting in the back.
Since my 70s 460 is stock with 400 hours, I don't expect a lot of performance loss.

[Rexone]

The Rex Inline Silencers (http://www.rexmar.com/page237.html) work pretty well on stock type motors with minimal power loss. 3", 3.5", and 4" are available. We don't recommend these for anything that's built much beyond stock because you will see some power loss as the HP rating goes up. They generally knock off 8-10 dBA which on stock motors should get you well under the CA limit in most cases.

[sanger rat]

Have you guys seen these? http://www.ggb.ca/home.shtml