After I just put your RS400 amp and ZX654 speakers into my '09 Street Glide, all I could say was "HOLY $#@&!!" I replaced a Hog Tunes amp and Rockford Fosgate speakers (had Hog Tunes speakers but they fell apart). That system was better than stock, but still left me wanting more. After messing around with other systems while trying to save some cash, I realized that I was actually wasting money. I looked Hawg Wired up online and liked what I saw, but I had a bunch of questions. I got ahold of Mike via e-mail who was extremely helpfull and gave me an education on how things work. Once the gear arrived I found that the instructions were pretty clear and the instalation was easy. I did have one question while putting the system in so I called Hawg Wired support and happened to get Mike. He gave me an answer and then gave me his cell number in case I needed to call him again over the holiday weekend. GREAT CUSTOMER SERVICE!! When I got done with the install and turned the system on, I was blown away! I could not be happier. My only problem now is that I need new pipes. I can barely hear my bike anymore. Satisfied customer, JH