Page 1 of 2
Quieter Pipe For my 125cc Stroker ???
Posted: Mon Sep 22, 2014 8:04 pm
by Hppowdercoatings
Got my 87 Elite with 125cc Stroker running like a Raped Ape but it's Really loud with the V8 pipe.
Any Recommendations on a Quieter but good flowing Pipe ?
Pic of Current V8 pipe..

Re: Quieter Pipe For my 125cc Stroker ???
Posted: Mon Sep 22, 2014 8:07 pm
by Trafficjamz
I've got an RDO.
It's like the pg long, but for a stroker.
it's still pretty d*** loud though.
Re: Quieter Pipe For my 125cc Stroker ???
Posted: Mon Sep 22, 2014 9:01 pm
by Hppowdercoatings
graphite9 wrote:thats not a v8, and it looks like thats not a 120cc pipe..I had the big scorpion, and it was a screamer. I don't think there is any way around the noise.
Well it came with the Engine when I bought it, Says V8 on it, was blue before I powder coated it black.
How do I tell if it's a 120cc Pipe ?
I don't think the Neighbors like it when I ride by with it screaming at 9500rpm..lol
Re: Quieter Pipe For my 125cc Stroker ???
Posted: Tue Sep 23, 2014 7:08 pm
by Johnniespeed
Cut the u-pipe off the convergence cone of the expansion chamber and weld that hole shut, using a small hole saw on the belly open a spot for your tail pipe and weld it into the belly. The performance will not change but the noise will greatly be reduced.
You can Google the subject of belly exit expansion chambers to get more technical information.
My pipe used to look like yours, ear splitting noise, changed to belly exit and noise greatly reduced with no performance change.
You can see the photo, to get the idea.
Re: Quieter Pipe For my 125cc Stroker ???
Posted: Tue Sep 23, 2014 9:50 pm
by paulpauly7
MLM mostly make side bleed pipes for this reason less noise .
Re: Quieter Pipe For my 125cc Stroker ???
Posted: Wed Sep 24, 2014 12:33 pm
by Hppowdercoatings
Johnniespeed wrote:Cut the u-pipe off the convergence cone of the expansion chamber and weld that hole shut, using a small hole saw on the belly open a spot for your tail pipe and weld it into the belly. The performance will not change but the noise will greatly be reduced.
You can Google the subject of belly exit expansion chambers to get more technical information.
My pipe used to look like yours, ear splitting noise, changed to belly exit and noise greatly reduced with no performance change.
You can see the photo, to get the idea.
Thanks for the info "Johnniespeed". After a little Research I figured what the Heck and Give it a Shot and Make my Pipe into a side Bleed Pipe.. Guess what . It worked Better then I hoped it Would. After a couple rides around the Block I Noticed NO changed in the Bikes Performance. But I would say it DID Quiet it down 50-60%...
Here's a few pic of Exhaus after Mods. I still plan to remove it again so I can Sandblast and Ceramic coat it..

Re: Quieter Pipe For my 125cc Stroker ???
Posted: Wed Sep 24, 2014 3:32 pm
by bigreed
Are all of the sweet side exit (like johnniespeed) with the header going right instead of down custom? I've seen a few homemade on random drag race builds
The pipes ive used so far just hang to low for my combination of heavy weight 250lbs, crappie roads and the need to hit every apex.
Re: Quieter Pipe For my 125cc Stroker ???
Posted: Wed Sep 24, 2014 8:01 pm
by bigreed
Found another cool example
I think something like that would cure my header smash anxiety
Might just have to find a welder to hack my old next rs into a belly bleed side pipe for the 70cc
Re: Quieter Pipe For my 125cc Stroker ???
Posted: Wed Sep 24, 2014 10:27 pm
by paulpauly7
there are a few pipe ls like these on yahoo auctions japan for AF18 and variated AF05E .
Re: Quieter Pipe For my 125cc Stroker ???
Posted: Thu Sep 25, 2014 6:26 pm
by Hppowdercoatings
Took Pipe off today and Coated it..

Re: Quieter Pipe For my 125cc Stroker ???
Posted: Thu Sep 25, 2014 6:50 pm
by 808EERPS48
you could run a V8 hurricane and box it up itll take way some power but it will the quitest route
Re: Quieter Pipe For my 125cc Stroker ???
Posted: Thu Sep 25, 2014 9:25 pm
by bigreed
Hppowdercoatings wrote:Took Pipe off today and Coated it..

Looks awesome!
Re: Quieter Pipe For my 125cc Stroker ???
Posted: Fri Sep 26, 2014 1:40 pm
by ped
Hi bigoted. very nice. and I like the look.
question I wonder if you were to face the muffler forward would it put less stress on the mounting bracket? it would change the look.
Re: Quieter Pipe For my 125cc Stroker ???
Posted: Mon Sep 29, 2014 12:14 am
by bigreed
paulpauly7 wrote:there are a few pipe ls like these on yahoo auctions japan for AF18 and variated AF05E .
Cant find any tried chamber, muffler, pipe, maybe just not at the moment, what keyword should i try. AF18 "keyword?"
Re: Quieter Pipe For my 125cc Stroker ???
Posted: Mon Sep 29, 2014 4:47 am
by paulpauly7
af27 or af28 or dio