I just installed a brand new Delkevic exhaust slip on, on my 2007 Honda Cbr1000rr. Immediately, I took out the baffle before even trying out the sound level with the baffle. Delkevic makes a great product, everything fit perfectly as described. I love loud exhaust systems, but man, this thing is too much for me. It is not a raggedy loud, it is classy I must say. My bike is geared down, -1 +2. At 75 mph in 4th gear, around 7,000 rpm I believe, the exhaust is loud, resonating around in my helmet like crazy! Maybe I am getting old, but about 15 years ago I had a 2003 Honda CBR 954RR with a [email protected] slip on. It wasn't this loud though, or so I dont think. Oh, and today, I did the right thing and went to the DMV and got myself a legitimate class M endorsement! I feel so much better doing things the right way. Give me some feedback guys on this Delkevic exhaust.