Mk45s
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Novice
Joined: Aug 2014
Posts: 20
Likes: 14
From: SE Florida
Mk45s
I’ve been looking for a slip on for a 21 SG.
Unfortunately my search has been limited to a online search.
I was completely sold on the magnaflow redline but after calling Arlen ness and magnaflow, their motorcycle muffler lines are defunct.
The next option seems to be the SS MK45’s
for a deep throaty sound that’s loud but still allows me to listen to the radio.
any other suggestions?
Suggestions on where to buy it?
Unfortunately my search has been limited to a online search.
I was completely sold on the magnaflow redline but after calling Arlen ness and magnaflow, their motorcycle muffler lines are defunct.
The next option seems to be the SS MK45’s
for a deep throaty sound that’s loud but still allows me to listen to the radio.
any other suggestions?
Suggestions on where to buy it?
Seasoned HDF Member
Joined: Jun 2012
Posts: 14,438
Likes: 2,421
From: Pittsburgh, Pa
I have the MK45 on my 2013 road glide and love the sound! Not too loud. You can either have the db reducers in or out. With them in you get more low end, but the sound isn't as loud or nice.
I ride once in a while with the radio off just to listen to them!
I ride once in a while with the radio off just to listen to them!
Stellar HDF Member
Joined: Nov 2015
Posts: 2,007
Likes: 1,735
From: Variable
Hmmm... that’s not been my experience. I have the S&S MK 45’s, and find them to be not as loud as Bassani or Reinhart, and slightly louder than stock. The sound is very deep and throaty, with a nice rumble. They also have a dB reducer, which is easily removable for a louder sound. Great pipes and 50 state compliant too.
Cruiser
Joined: Dec 2006
Posts: 112
Likes: 10
From: Moneta, Va.
I'm using the MK45's too. I have both extra baffles in.
Nice low rumble puttin' around.
But when they are at full song....it is a sound to behold. It's like being in a sound bubble.
It is a thumbs up for me.
Nice low rumble puttin' around.
But when they are at full song....it is a sound to behold. It's like being in a sound bubble.
It is a thumbs up for me.
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Stellar HDF Member
Joined: Jan 2017
Posts: 2,673
Likes: 2,078
From: Massachusetts
Depending on your head-pipe, cat or no cat, performance or stock cams,big bore etc. all these variables will make a lot of difference. So the guy who says they are quiet probably has a mostly stock bike, compared to a heavily modified bike. Or he could just be half deaf ,like myself! 
Last edited by jake24lt; Mar 5, 2021 at 11:05 AM.
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1st Gear
Joined: Jun 2014
Posts: 5
Likes: 0
From: Michigan
I put the grand nationals on my 20 SG last year. All stock otherwise, these sound nice and low at idle or cruising, and even nicer when accelerating. Not as loud as my buddies neighbor haters, but a much better sound.
This reminds me, I need to take out those DB reducers and see what they're like.
And FuelMoto had the best price and great service.
This reminds me, I need to take out those DB reducers and see what they're like.
And FuelMoto had the best price and great service.
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tylerfj24
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Dec 10, 2020 04:02 PM