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Quieter Pipe??

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Quieter Pipe??

Postby Hughieboy » Fri Aug 29, 2025 3:08 pm

Looking for exhaust advice…
I’m running a GT186 motor with a GT race crank, 30mil Dellorto, Reedspeed clutch, etc. and a Avanti Ex Box with tail can in my S2.
The scooter runs great in every way and has been reliable, so no complaints about performance.
It’s just the noise of it is starting to get on my nerves! I know that sounds daft but as I get older I’d quite like to be less conspicuous on occasions and the Avanti pipe is anything but that! I know it’s not as noisy as a Gori or whatever but it’s still loud and I’ve never thought it had the nicest sound, it always sounded like it was blowing even though it’s not, it doesn’t have the ‘ring ding ding’ of an expansion for instance.

Is there anything quieter out there that I could fit without sacrificing performance?
I was under the impression that BGM Clubman’s for instance might be quieter but were restrictive due to the tailpipe bore size so I’m not keen on going that way. And the Ex Box definitely performs very well…

I use it a lot as transport on the back of our motorhome for me and the Missus, it’s just not really campsite friendly due to the racket it makes. Anyone got any suggestions? Is it possible to get quieter without losing performance or does one just go with the other?

I suppose I could always get a Royal Alloy….. lol…
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Re: Quieter Pipe??

Postby Storkfoot » Fri Aug 29, 2025 4:33 pm

I used to run a GT186 with both a v1 bgm/ MB Clubman and a Ron Moss Avanti. I always thought the bgm/MB was better suited to the characteristics of the engine. The Ron Moss put performance too much at the top end and acceleration in the lower gears suffered.

From memory, whilst they had a different tone to each other, they were both reasonably noisy.

An AF 42mm Clubman would be quieter but they do have a tinny sound and performance would suffer.

Other than earplugs, I’m not sure if there is a magic answer to this question but then I don’t have knowledge of all the exhaust choices out there.
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Re: Quieter Pipe??

Postby Hughieboy » Fri Aug 29, 2025 6:19 pm

Storkfoot wrote:I used to run a GT186 with both a v1 bgm/ MB Clubman and a Ron Moss Avanti. I always thought the bgm/MB was better suited to the characteristics of the engine. The Ron Moss put performance too much at the top end and acceleration in the lower gears suffered.

From memory, whilst they had a different tone to each other, they were both reasonably noisy.

An AF 42mm Clubman would be quieter but they do have a tinny sound and performance would suffer.

Other than earplugs, I’m not sure if there is a magic answer to this question but then I don’t have knowledge of all the exhaust choices out there.


Thanks. I thought that might be the case but new stuff is always coming out so it’s always worth asking.
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