Call V&H or Big City thunder and ask the experts that answer the phone, they will tell you if they have em and if not who will. And if I am not mistaken...I am new to this wrenching stuff...the baffles are not necessarily dependant on the outside diameter, I just tonight, installed Rush 3 1/2 inch slashdowns with 2" baffles on my 08 Softail, and I have the option to go up to 2 1/2 or down to 1 1/2 if I want to by the kits what ever you do, remember you probably want to stay around the 1 3/4-2" range for the back flow...Good Luck.