I've read some very interesting threads on this issue. I'm thinking of wrapping my stock headpipe to the clamp as my tank sits very close the head pipe and for a margine of safety for burn prevention. I sometimes play ride in So Cal mountains... I've had brush stick between my guard and pipe and start smoking. If my pipe was wrapped I'd remove the guard. I came accross a thread where a DRZ had issues with tempering the metal which lead to cracking. I also read an opinion that stated more heat is sent down the pipe to areas that were not designed for the higher temps / they also mentioned the silencer will get hotter. I'm only interested in covering the first 12 inches or so... I'd like to hear from people who've had wrap on their bikes for a year or longer who could pass on their experience.