I just wanted to say that today I installed Cobra quiet baffles into my cobra speedster longs and wow, what a diffrence. It made my pipes a little quieter but gave them a better, deeper throatier sound plus nearly got rid of most of my decel popping and the increased back pressure makes the bike so much smoother and nicer to ride. Still has lots of bite but took away the harsh bark so if anyone is running cobra pipes I highly recommend them. Took ten min. to install and my neighors will like them too.