Next mufflers....S&S MK 45's?
Thread Starter
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Outstanding HDF Member
Joined: Apr 2006
Posts: 2,282
Likes: 52
From: DFW
Do you happen to know what size baffles are in the Grand Nationals?
Road Master
Joined: Aug 2009
Posts: 874
Likes: 80
From: new york
My research was looking for the best flow with the least increase in sound, I think I may be leaving a little power with the stock CVO mufflers. This is not the first time I have over thought the power over sound game. I was informed the Grand Nationals with the DB killer would be quieter without any low end loss, it does make sense as the G/N's are 4" bodies and the MK45"s are 4.5", although the 45 baffles are wrapped. With any kind of riding still 2 1/2 months away I should have time to experiment with the baffles and wraps. Thank you sixgun for the pics.
Grand HDF Member
Joined: Nov 2013
Posts: 3,807
Likes: 1,488
From: SW Washington State
My research was looking for the best flow with the least increase in sound, I think I may be leaving a little power with the stock CVO mufflers. This is not the first time I have over thought the power over sound game. I was informed the Grand Nationals with the DB killer would be quieter without any low end loss, it does make sense as the G/N's are 4" bodies and the MK45"s are 4.5", although the 45 baffles are wrapped. With any kind of riding still 2 1/2 months away I should have time to experiment with the baffles and wraps. Thank you sixgun for the pics.
I have never run the db killers, but I put them in last night and will run them today and see how they affect performance. For sure the sound is way better without them,so there is that struggle.
Thread Starter
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Outstanding HDF Member
Joined: Apr 2006
Posts: 2,282
Likes: 52
From: DFW
Thanks ...I'm assuming the MK 45's are the usual 2.5" baffles then, same as my Rinehart Motopro's.
Road Master
Joined: Aug 2009
Posts: 874
Likes: 80
From: new york
picked up the Grand Nationals today, disassembled to examine baffles, had some packing left from my last fullsac install. Wrapped the baffles and reinstalled with the DB killers and installed on bike. The sound is slightly louder than the stock CVO mufflers at idle but louder at higher rpm's. No testing or riding until later Spring. So far I like them.
Road Master
Joined: Aug 2010
Posts: 859
Likes: 43
From: Upstate NY
My bike is currently at the shop getting new bars. Considering a stage II with a 20% of parts and labor deal going on right now. They suggested to me the S and S Mk45's. My concern is that when I had a V and H duel exhaust on my Heritage with the quiet baffles installed, the drone on long rides started to get to me. I want to avoid repeating that mistake on this bike. I would like to know your opinion on the 45's in that respect (droan). Thanks
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Road Master
Joined: Oct 2008
Posts: 842
Likes: 284
From: UK
Seen somewhere Jamie recommend Grand Nationals with their XXX headers for bigger motor builds, so you got room to grow
Tourer
Joined: Feb 2017
Posts: 369
Likes: 130
From: Maryland
My bike is currently at the shop getting new bars. Considering a stage II with a 20% of parts and labor deal going on right now. They suggested to me the S and S Mk45's. My concern is that when I had a V and H duel exhaust on my Heritage with the quiet baffles installed, the drone on long rides started to get to me. I want to avoid repeating that mistake on this bike. I would like to know your opinion on the 45's in that respect (droan). Thanks