So they're cheap, it's just slip ons. You can see that the bands will wrap around the pipe anywhere so it can bolt to the passenger pegs. They clamp to header and springs hold them to the mufflers. They don't look to thick, so they'll probably be loud. They're supposed to be stainless steel too. If they aren't what they claim, send it back. there's no risk buying through paypal. I'de love a good exhaust, but I spent that money on other parts. A good exhaust is as you know, expensive! But slipons will give you little to no power anyway(nothing you'll notice) they're just for looks and sound.
I've been meaning to cut my 08 pipes in half for some sound and to shed a few pounds, but these are interesting. If you like them, try them.