Sorry for the long response time but I have been unable to access this site until just now but I have 2 silencers for it the one that I modifed is a 304 and I have a us forestry approved just like yours only I like yours better due to the angle which is my next mission to make the 304 shorty go up on a angle like that.
I just repacked my 304 shorty with this stuff that is pretty amazing to be honest and they said they are going to make a 500 kit for us that will fit our stock silencers and the aftermarket units for our bikes which I thought was d**ned nice of them to look out for customers like that.
I was yelling through my 304 before opening it up and repacking and my voice seemed unaffected then I repacked it and yelled through it and my voice just disappeared it's just amazing to me that anything would absorb sound like that and I'll make a video with the 304 shorty and new packing as soon as walmart gets me my new battery they ordered because the wife is gone with her ipad so no vid with sound but the bike passed a decible test at 2500-3000 rpm it came in at 90 decibles which is 4 less than the park asked for.
I will get a video of the sound as soon asap and you will be amazed at how deep the sound is coming from this 8" silencer a nice deep pop and growl I couldn't be happier with the sound.
Made in USA this should matter even if the product was equal to other brands.
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