Just mounted the 4.0 Shark Road on my '24 CVO SG. If i had to describe in one word... it would be OMG! In the 40 plus years of riding, by far the easiest upgrade Ive ever done on my bikes. Didnt need to fabricate, go to hardware store, nothing. Everything was right there. Sound is music. Hits you in your chest. Deep, throaty and downright good looking. Thank you Shark Road!!