Back in the day, the Snuff or Not was the straight pipe noise control solution. Google search indicates it's still available. Anyone know of a modern day equivalent to instantly change exhaust noise levels?
http://www.coolretrobikes.com/monthlyspecials.htm

 

Baffles? A big washer welded to a bolt?

 

Google Jekyll and Hyde Pipes.

 

Pretty much what a Snuff or Not was, prolly why they only cost $1.95 ($45 today)

 

Wow, 1500 Pounds UK, looks like they are not availble in the US.
https://www.hdforums.com/forum/sport...-exhausts.html
How about it American aftermarket, can you engineer an electronic, twist **** or cable operated exhaust baffle?

 

 

Ya they are €2000 Euro here......I have heard them though and they are awesome...little pricey for my liking......unless I get pulled over for my Hookers, I am not even considering them.

 

Snuff or Nots were the hot setup for Honda 305 Scramblers. That, and a rattle can paint job.

 

I just wonder how effective it was/is, making the bike quiet?

And I really thought this thread was about tobacco.

 

Harley makes an active exhaust called the Screaming Eagle Active Performance Muffler Kit, run by a server controlled butterfly valve. It altered the gas flow between the left and right side, with sound, hp, and torque changes depending on the gas flow between the two mufflers.

Part number is 65467-05, and it fit the 05 - 07 tour bikes. Price in the '08 parts book is $699.99. I found a PDF file on it:

http://www.harley-davidson.com/en_us...ts/-j03535.pdf

I remember the Snuff or Not washers back in the late 60's. Dr. Dyno uses a similar device to put some back pressure back into straight pipes when he dyno tunes.