4 into 1 exhaust

Hey I recently bought a fully rebuilt kz1100 that was put together in Jacksonville and the exhaust has some rattle to it. It was explained to me that that was as good as it gets. I was wondering if anyone can point me into the direction of differnt types of 4 into 1 exhausts out there. Or perhaps recommend one they have.
Thanks!

Welcome grl06...I'm not sure I understand your questions...the exhaust has a rattle like something is loose inside it? Inside the canister or muffler? Inside the header pipes? The exhaust note sounds like a rattle...like it is motor-related? The header pipes feel loose on the motor? Is it a rattle or a ticking? Are you looking for advice for a replacement system?...photos of what you have might aid in IDing your pipes.

Baffle could be loose or broken(had the same problem with my kerker) the small end baffle plate had broken loose.

thanks for the advice. How about a name of a good after market 4 into 1 system though.

Kerker, SuperTrapp, Yoshimura.