Bonneville exhaust

[Whistledown]

This is my first post. Today I had delivered a 2015 bonneville (bought unseen) the seller told me that the exhaust has had baffles removed and air intake modified to compensate. If I were to put stock silencers back on what other changes would need to be made. Are there other ways to quieten the exhaust.

 

[CarlS]

I assume your Bonnie is EFI. If so, the ECU should compensate if you add baffles. I don't know what modifications were made to the airbox; but the easiest mod is to remove the snorkel. If that is the mod, I would just leave it be and let the bike breathe better.

 

[Whistledown]

I assume your Bonnie is EFI. If so, the ECU should compensate if you add baffles. I don't know what modifications were made to the airbox; but the easiest mod is to remove the snorkel. If that is the mod, I would just leave it be and let the bike breathe better.

thanks for that. The airbox has been replaced with a removal kit. Do you have any recommendations for baffles or are they mainly all the same (as long as they fit)

 

[CarlS]

I am not familiar with silencers of the EFI Bonnies and I have never seen the baffles. My 03's did not have removable baffles. I do know that there are "universal" baffles available. I have no idea if these would fit your Bonnie. JC Whitney carries these baffles or at least they used to.

Are the silencers on your Bonnie stock or are they third party replacements?

 

[Whistledown]

I am not familiar with silencers of the EFI Bonnies and I have never seen the baffles. My 03's did not have removable baffles. I do know that there are "universal" baffles available. I have no idea if these would fit your Bonnie. JC Whitney carries these baffles or at least they used to.

Are the silencers on your Bonnie stock or are they third party replacements?

The silencers are aftermarket, I am not sure if the pipes were replaced as well. Have you any idea what outlet diameter the standard pipes are?

 

[CarlS]

Okay, if you know the brand of these after market pipes, go to their website and see if you can purchase the baffles. I do not not know what the outlet diameters of the standard pipes are, A Triumph dealer could tell you that. If the original owner changed the headers, your least expensive route is to purchase the baffles.

Let us know what you decide and how it works out.

 

[Whistledown]

Okay, if you know the brand of these after market pipes, go to their website and see if you can purchase the baffles. I do not not know what the outlet diameters of the standard pipes are, A Triumph dealer could tell you that. If the original owner changed the headers, your least expensive route is to purchase the baffles.

Let us know what you decide and how it works out.

Thanks will do.

 

[rodhotter]

OE silencers are almost free on E-bay, makes your bike sound like a sewing machine. lots of options at good prices being an older model. Tec has decent cheap mufflers as well as full systems. shop read + learn!

 

[banzai]

If your interested I have a set of stock 2015 mufflers. PM me if your interested----Thanks

 

[Whistledown]

I am not familiar with silencers of the EFI Bonnies and I have never seen the baffles. My 03's did not have removable baffles. I do know that there are "universal" baffles available. I have no idea if these would fit your Bonnie. JC Whitney carries these baffles or at least they used to.

Are the silencers on your Bonnie stock or are they third party replacements?

I have found out that the mufflers are third party EMGOs. The header pipes have been replaced and are larger than stock. I have removed the baffle, repacked with stainless steel wool and fibreglass mat. Still loud. I have found a local motorcycle guy who specialises in motorcycle exhausts and he is currently looking at it.

 

[Whistledown]

If your interested I have a set of stock 2015 mufflers. PM me if your interested----Thanks

Thanks for that but the header pipes have been replaced so I can't easily put the originals back on. I also live in Australia.

 

[Whistledown]

I have found out that the mufflers are third party EMGOs. The header pipes have been replaced and are larger than stock. I have removed the baffle, repacked with stainless steel wool and fibreglass mat. Still loud. I have found a local motorcycle guy who specialises in motorcycle exhausts and he is currently looking at it.

 

[CarlS]

I put EMGOs on my 03 T100. I kept the stock headers and used adapters. I kept the baffles in. The bike was louder, sounding more like a 1960's Triumph, which is what I wanted.