Has anyone put these in there exhaust? I have a KTM 06 625 smc which I drilled out the end caps 1 1/4". I now find it to loud unless I use desi-damps. I don't want to piss off all my neighbours. I looked them up online and there smallest size is from 1.31-1.50 in.
If you have used them what is your impression on db reduction/ fit / looks and is there a loss in power etc? They seem to have internal and external ones. I would like to find out the best application for my bike. Cheers