After enjoying being the center of attention in traffic due to the excessive noise of my MRP pipe... I've decided after a rather long road trip, ears ringing, I needed to find another pipe or a way to quiet this one... So, I grabbed the 10mm wrench and unbolted the silencer and seperated it and found the center preferated tube wrapped in fiberglass. I removed a the section, now burned and charred, and loosely rewrapped the pipe and reassembled. What a difference, much more quieter and a bit quicker, needed to rich out the fuel mixture a bit too!! So for all of you looking for a performance pipe, and know how hard it is to find one for the R-50x, you can make a slight modification to this one, without sacrificing performance, and without loss of hearing!! Hope this helps alot of you out there!!