To be honest I was concerned because this set was so much louder than the others and I didn't want it to mean that someone had been in there and done something which could cause damage over time. When I found that the insulators were there it really made me wonder what was going on. I'm honestly wondering now if this is a stock pipes vs aftermarket issue making me think that the clutches are quieter on the other ones when in reality they may not be!

On my track bike I think it'd be neat if it was LOUD-loud, but on the street bike I'd rather it be a bit quieter (see reason in original post).