Advance Auto Parts has it in their catalogue but my local store does not keep it on the shelf. It's a two or three day item and I think they only stock 2".

 

Waaaayy too expensive at Advance. I priced it here and they want like $50 for a roll and the little clamps. I got mine on ebay for about $20.

http://search.ebay.com/search/search...le=header+wrap

 

i put it on my bike last year. noticed a little diff. in the summer with the heat issue. as far as power i dont know.

 

I got some 1" wrap years ago from Warshawsky's. I chose 1" because I thought it would conform to bends better. You are supposed to "paint" the wrap with a HT coating, which is supposed to minimize moisture absorption and provide chemical resistance for the wrap. They also recommend not using more than a 1/4" overlap to prevent hot spots and allow the header to still cool adequately. They say you get better performance and lower fuel consumption and that the mixture should be leaned out slightly because:

"By wrapping headers, exhaust gas heat within the header is maintained. This translates into better exhaust flow because the hotter the exhaust gasses stay, the faster they flow out of the engine. By improving the scavenging of spent gases, the engine breathes more efficiently. This reduces contamination of the intake fuel air charge with exhaust gases. Thus allowing the engine to develop more power with less throttle.

Why is it necessary to lean the motor down in most applications with the wrap?

Air/fuel mixture is enriched due to cooler intake and increased exhaust velocity. Increased scavenging of the exhaust has an effect on the induction side of any motor. Clearing the combustion chamber more efficiently means more efficient flow of the incoming air fuel mixture."

They also say it would take 30+ years for heat wrap to cause nominal deterioration of the header.

 

Actually the wrap holds up very well and does not cause a problem when wet. Mine has been on for nearly 5 years. I use simple green on my wrap when i wash the bike to keep it clean. I have been caught in the rain and ridden with it soaking wet just after a wash.

The proper way to install header wrap is to saok it in a bucket of hot water and then wrap it as tight as you can pull it around the pipe. Installing it wet cause it to stretch a little and then when it drys it shrinks back to normal size and is like steel. I use two runs of safety wire at each end to hold it on. The proper end to start on is the rear so the over laps are correct.

Here is a pic of mine installed with my track day body work on the bike

 

Really nice, Thumper but the final touch would be to coat the header so that it's chrome all the way back. Really like all the work that you've done to the bike.