Actually I have a KTM competition silencer on right now. It is off a KTM supermoto SMC.
I just picked it up and it is working good. Saved some weight and it has a good sound. Quiet enough for crusing through the neighbourhood.
I still need a lighter silencer for my LC4 as the guy I got the smc competition silencer from changed his mind and wanted it back ...I am back to the stock muffler.