2019 Street Glide Special Exhaust

[GAFLHXS]

I purchased a 2019 FLHXS on the first day the new 2019s arrived. I traded in my 2014 FLHXS which had 36,000 miles. She gave me excellent service with no problems. On the 2014 I had Fulsac headers, open breather, screaming eagle tuner, and slash V & H slipons. I thought it sounded great. But truthfully, all that with the dealer dyno tune wasn't quite worth the $2000 in performance gains looking back. The 2014 had the otherwise stock 103. The new Street Glide has the M8 114. I think the 114 is about equal, or slightly better, than my 103 was when I traded it in. I think all I want to do on the 114 is to make it sound like a Harley. Way to quiet now. I am torn between the S&S M45 slipons and the Cobra Neighbor Haters based strictly on what I have been able to read in forums and other info on the net. I don't want stupid loud, just a Harley that sounds like a Harley. I know previous to the M8s, Slipons only did not require tuners or changes to the bike's computer. What are your experiences for slipons only on the M8s. Do I need to retune? What slipons are working well on the M8s? Ideas and thought are appreciated.

 

[Tarzan]

I have the Cobra Neighbor Haters and hated them stock.
I like them now, but I rebaffled them myself. The stock sound was too loud for me and wasn’t a real rich sound. I removed the stock baffle, then bought two thrush mufflers at oreillys for $25 each, then cut them apart and the cobra baffles apart also, then welded the baffles from them into the Cobras baffle end . Before installing them back in the pipes I wrapped them with steel wool. Much better sound to me and a little quieter.
If I had it to do over I would look at a different muffler. There are some really good options now. I found great demonstrations of some of the best ones on YouTube

 

[GAFLHXS]

Thanks Tarzan. Exactly the type of input I am looking for.

 

[GAFLHXS]

Went to the local HD dealer today, they sell Rhineharts. Parts guy and dealer mechanic were at the desk so I started asking questions. They say that with just slipons I still need to buy a tuner and remap. That's another $350. Anyone else going with slipons alone and not using a tuner for an M8 engine?

 

[NGOT8R]

I have the Cobra Neighbor Haters and hated them stock.
I like them now, but I rebaffled them myself. The stock sound was too loud for me and wasn’t a real rich sound. I removed the stock baffle, then bought two thrush mufflers at oreillys for $25 each, then cut them apart and the cobra baffles apart also, then welded the baffles from them into the Cobras baffle end . Before installing them back in the pipes I wrapped them with steel wool. Much better sound to me and a little quieter.
If I had it to do over I would look at a different muffler. There are some really good options now. I found great demonstrations of some of the best ones on YouTube

Here is my 2018 M8 with S&S Grand National mufflers. The mufflers have decibel killer inserts which can be very easily removed for more sound, although I have never removed them.

https://youtu.be/GHra4wK-B_I

 

[NGOT8R]

One additional piece of information I'll share with you is, the S&S muffler coating does not match the color of the factory heat shields. I had my factory heat shields media blasted and coated with the matching Cerakote after S&S told me that Glacier Black is the color that they use on their mufflers.

 

[GAFLHXS]

Thanks for the heads up on the paint mismatch. I was at the local dealer Saturday and listened to a brand new FLHXS that had Cobra Neighbor Haters installled. A little loud for my taste. I ended up ordering a set of 4.5” Rhineharts. I spoke with a person who had a set and got good comments from him. I’ll find out when they arrive. Fingers crossed.

 

[Tarzan]

That pipe sounds nice. Good looking muffler too