Part # 8818270
Exhaust Thread Cutting Tool 52mm

Although I've had an Airhead for 10 years, I bought another last year. When I tried to remove the exhaust nuts, both were stuck and would not budge. After cutting them both off I could see that the left one had minor damage from someone previously cutting it off, so ordered this tool. Tool worked well to clean up the minor damage with some cutting oil.

Fantastic tool! Seems expensive, but worth every penny. I use it to clean the exhaust port threads on my R 100 every time I remove the star nuts. I purchased a project airhead recently and found that the previous owner had threaded one of the star nuts on crooked. The threads werent completely sheared off, but were crosshatched enough to make them unusable. Solutions for this problem Are either too expensive or unacceptable: purchasing a new jug; aluminum welding; bolt-on adapter; etc. I originally tried to source a 38 mm thread die. Not possible. That I stumbled upon this tool on an airhead blog. It's extremely heavy duty and well-made. It essentially cut the threads back to original in about five minutes. Great product.