I put a set of Rinehart slip one my Road King Special which had a really great sound with the stock head pipes. Should toss those into the consideration mix if looking for slip ons.

 

i like my s&s mk45’s nice sound when on the throttle and deep idle, how much louder were the Magneflow hitmans the the mk45s?

 

The FM Street Outlaw mufflers have the best balance of sound and power I have used to date. It's now my go to muffler.

 

About the same volume I would say, I ran the MK's without the DB killer. I was not a fan of the tone of the MK's, especially low rpm or lugging around, had a weird flappy, Jack hammer sound. And I mean no disrespect to you sir, or anyone else who runs, and likes the MK's, just my personal opinion. They were built very well but was definatly the heaviest of any set I ran.

 

I am running the RCX 4.5" along with their headers. I had them put on my bike because I had RCX 4" on another bike and was very happy with them.

 

Ran the MK-45's when I had the stock header. I liked the way they sound and their black ones are ceramic coated, very durable. Recently swapped the cam to a Zippers 468 and added a Bassani Road Rage 3 Stainless 2 into 1. I really like the Bassani sound and look. M8's respond well to the 2 into 1 pipes.

Assume you are wanting to only add cans and not do a full system? Lot's of choices out there for sure, head to a local bike night and listen to guys with different cans. Everybody loves to "demo" how their bike sounds!

 

I'm running the RCX 4.5 on a stock headers. I like the sound much better over the stock mufflers. I don't have anything else to compare with. I'll change the headers out sometime in the future and the sound will change again.

 

As Durwood has stated, the Fuel Moto's will be hard to beat on the Performance side as far as Tq. and HP goes, if your looking for the deeper sound then from what I've heard the Magnaflow is probably the best sounding one.
I have a S&S 2-n-1 waiting to go on mine after I put near a 1000 miles on ole gray, we'll see how that does along with the S&S 475 cam.

 

RCX slip ons were on my Low Rider sitting in the showroom when I bought it. Nice deep throaty rumble, I like 'em. They remind me of the V&H Big Shot Staggered's my wife had on her '03 Low Rider way back when.

 

The Hitmans are a little rich right now and the RC 4.5's don't come in black, slash up. So I am looking at either the FM Outlaws or the RC 4.0s.