Rush slipons did it for me, but only after a trip to Bike Week where I got to hear different setups. Sound is subjective; many of the popular pipes that folks said were "quiet at highway speeds" I found to be too loud. What's loud to you may be quiet to me, and vice versa. The Rush slipons with 1.5" baffles are quiet enough at low RPM & highway speeds to easily hear the stereo, but have quite a bark when you get on it. Been running them for 4 years and wouldn't have anything else.

 

I have been running these on my '08 and have no issues hearing the radio on the highway.

 

went thru this myself, and found out that the cat DOES make a difference on how your slip-ons will sound, my buddy has a 07 RKC and has the rush slip-on's 1.75 which i though sounded great!! so i picked up a set from a forum member here for a good price and put them on.

took the bike out and it was nothing like my buddies bike, my 10 ultra still has the cat, and was not aware of how much it did make a difference. if i had got them new and at full price i would be bumming.

 

You said "crack". My wife's Glide came with D&D 2;1. They crack as you say. I can just touch the throttle and have had people jump. I asked her how they were at cruising speed with the radio and she said fine, they mellow out. Expensive I know, if it had not been done like this at the dealership I probably would not have opted for the expense, but went with something different. I like the pipes on her bike. I have Reinhart slip ons on my bike I like them. She came off a Heritage with V&H longshots so that was pretty loud at speed for her comparison.

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+ one for Rush slip ons

 

Vance & Hines monster ovals with true duals. This system makes it's statement via a deep meaty sound afforded by the larger size of the oval muffler not because of high volume levels. You can easily hear radio at all speeds.

 

Vance and Hines pro pipe. Absolutely love it.

 

My buddy and I just installed V&H Power Duals and Kuryakyn Crusher mufflers (along with a Kuryakyn Hi Five Mach 2 air cleaner) and reflashed the ECU with a TTS MasterTune unit a stock Kurakyn map on both our bikes. Fun install and sounds great. I did not want to have a system that was a lot louder than stock, but I wanted a better tone and I wanted it to bark when I hit the throttle. I did not chose true duals because a) the power duals should make the bike a bit quieter than true duals 2) in theory a little more torque and HP should be seen with the power duals' crossover configuration.

The system did not disappoint either of us. Bassier tone at idle and cruise, a little bit louder than stock at idle, and it certainly barks when I hit the throttle. I was grinning all the way home.

One thing, I was simply amazed at how hard we had to tighten down the torca clamps for the mufflers. Without a torque wrench to guide me, I think i would have stopped a lot sooner...and wound up leaks. If you make a change, do not reuse the Torca clamps...get new ones...and make sure you tighten down everything to spec.

Dunno how you are supposed to get a torque wrench in to the bottom bolt on the front cylinder head, though....there is no room up against the frame. I dunno how a real shop does it. I simply tried to compare the feel against the top bolt (which was properly torqued) and applied German torque (it was "gutentight" as my buddy says).

 

+1 on the CFR's.Great pipes,have had mine with their duals for almost 2 yrs now.

https://www.hdforums.com/forum/engin...ystems-20.html

 

I had a stock Ultra with Phython slip-ons. The bike was a little louder than stock, but had no bark.

I replaced the down pipe (Jackpot 2/1/2), AC and added a power commander. The bike came alive, more torque, power and BARK. Same Phython slip-ons, the sound is a lot different.