They are a great set of pipes when set up correctly. The problem is that setting them up correctly and fine tuning them is no easy task. They are awesome when they are on your friends ski and you can ride it, but that is about it. There is a reason they didn't sell a lot of them. Honestly if I could pick a set up for a couple hundred bucks, I totally would. For the everyday rider who doesn't want to spend all of his riding time turning wrenches, these are not the pipes for you. If you do get the chance to ride a twin piper, do not hesitate!