I like s&s products. I am torn between the mk45 ang the s&s 4 inch grand nationals. Any thoughts? Btw the pic is my new cvo

 

I have the Mk45's. The 4" GN's are cheaper but I think they're louder.

 

Interesting as I thought the GNs were supposed to be quieter, more for the touring aspect ...

 

Two M8 bikes with S&S in our group. The MK45's have more bass and volume, But I like the sound of the GN much better.

I had SE Cannons, too quiet. The GN with Db reducer out works for me.

FM says the dyno yields a "slightly " better torque curve with the Db reducer in.

 

I have the MK45's on my '17 and am beyond happy with them....... They have a deep, throaty rumble when your cruising along and a nice snarl when your twisting it up.......

I have a riding bud that has the Grand Nationals and they're ok... just much higher pitched than the 45's... almost a tinny sound, especially when he's getting after it.... and I think the bigger 4.5" ones just look better..... but to each their own..it's why we don't all drink that damn light beer!! ;-)....DW

 

Not sure what the issue is, friend had the 4.5" RC Exhausts installed in Daytona last year. They look and sound great on is 2017 Limited.