Oh wow is all I can say 4.5 inch RCX slip ons, all stock 2017 road glide ultra 107, stock head pipe and air cleaner. No tune. Really rich deep rumble and growly when you twist it! Don't sound puffy like other slip ons I've listened too. Listen with headphones on, phone or tablet speakers don't do them justice. Haven't ridden it yet, just got a foot of snow yesterday. Purchased at westend motorsports Great prices and fast delivery.

 

Pipes sound great!

 

wow, those really do sound great!

 

I know I love my RCX 4.5's! And I would honestly say that after a few thousand miles that they got even better sounding! And then later, the Tormentor Headers REALLY lit them up!

 

Sound better than MK45's

 

impressive sounding exhaust!

 

I've got them too and think it's a pretty decent sound...not too loud and not too quiet. Just enough more sound than stock.

 

Are these better than the SVT Boneshakers? Not sure if you guys have ever heard them. I really really need some pipes, just not sure which one I want to buy.

 

"Better" is subjective. You'll never pick the best sounding pipes for you unless you hear them in person. lol

Thankfully, I heard mine on another bike in the showroom when I bought it. Heard the S&S, the RCX, and the SE slip ons. To me, I liked the sound of the S&S's better.

 

Nice deep sound.