Aftermarket mufflers GL1500

[agedbikeman]

Update to my previouse topic on this subject.
I bought something called Black Widow Stainless Steel mufflers from the UK, but I bet you have something similar in the US, they're just a stainless steel tube7mm fatter than the GL1500 mufflers with the end caps riveted on, the collector end has extension pipes that fit the collector box and the other end is tilted slightly downwards.
Another tube full of small holes connects the end caps straight through and the space between the inner and outer tubes is stuffed with some sort of noise absorbing material.
In the back end is inserted a removable "DB killer", but it's too small and not effective enough and has a deep bass drone, so I bought a longer DB killer with less holes on Ebay from China for less than $20 the pair, so it now sounds similar to the oem mufflers, the whole system cost lees than 300 bucks.
The good part is the extension pipes between the mufflers and collector, dead easy to completely remove if you have to get the rear wheel out, will never rust as it's stainless, looks like a win win situation. All we need now is someone to come up with a stainless collector box and these Wings will go on forever.

[Arcweld80]

I used mufflers from a Street Glide 2008. Best sound ever!! No droning sound at all. Used a 30 degree 44.5mm (1.75 inch) pipe and made some brackets to use in the last bag mount to hold the mufflers. Very cheap exhaust mod. Regards from sweden

[FM-USA]

Update to my previouse topic on this subject.
I bought something called Black Widow Stainless Steel mufflers from the UK, but I bet you have something similar in the US, they're just a stainless steel tube7mm fatter than the GL1500 mufflers with the end caps riveted on, the collector end has extension pipes that fit the collector box and the other end is tilted slightly downwards.
Another tube full of small holes connects the end caps straight through and the space between the inner and outer tubes is stuffed with some sort of noise absorbing material.
In the back end is inserted a removable "DB killer", but it's too small and not effective enough and has a deep bass drone, so I bought a longer DB killer with less holes on Ebay from China for less than $20 the pair, so it now sounds similar to the oem mufflers, the whole system cost lees than 300 bucks.
The good part is the extension pipes between the mufflers and collector, dead easy to completely remove if you have to get the rear wheel out, will never rust as it's stainless, looks like a win win situation.
All we need now is someone to come up with a stainless collector box and these Wings will go on forever.

I'm currently have a design in that realm, still (old school) 'on paper'. There's nothing like it on the market, nor do I expect it to be since the GL1500 is 21 years out of production. It's touted that anything worthwhile has been made.
We know parts last only 'X' long and these bikes are still one of the worlds favorites for comfortable long distance touring. So I think they'll be around a while longer, we just need folks to produce items (like mine) to keep them out of the bone-yard.
ANYways...
Two key components, stainless for longevity of course, the other to make any exhaust work simpler.
Next step test it's viability out of light gauge steel, which is easier to make adjustments, then onto stainless. Light gauge stainless for those who want a little Rumble/Roar and heavy gauge for sound control.

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[agedbikeman]

I suppose the easiest way to build one would be not to use the original box design, but a series of pipes with internal DB killers in them, don't know how well it would work like that, if someone could try it in mild steele first, the firm I bought my black widows from do such a thing in stainless but the pipes are empty, must make an awful noise, once you have a correct design, you have a world market, I'm sure they's sell like hot cakes.

I managed to find a good second hand one from Holland, the old one needs some tubes welding onto it and it would be ok, I'd willingly give it to anyone trying to build or copy to produce them commercially.

[FM-USA]

I too picked up a good used one off eBay couple years ago. Peeked inside noticed expanded metal lined the inside. Seller probably couldn't stand the BUZZ that a loose section of expanded metal made.
I just received a boroscope yesterday I can look deeper.

As for my design. Light steel sheet will allow easy access for baffling changes. Once I get a workable design then will be made in stainless.

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[agedbikeman]

keep me posted on your progress, always interested in individuals innovation.

Alex