Exhaust bung size (header)

[33996]

Anyone know the bung size used on the headers for sampling individual cylinder sampling?

[dukepilot]

It's an odd size with a fine thread pitch. Aprilia uses the same size. You can get threaded adapters and the other things you will need to sample each cylinder from http://www.bridgeanalyzers.com/900345_moto_desc.php

Not inexpensive and there may be other sourced but this is where I got my stuff. I got the threaded fittings, a length of braided line an NPT fitting to attach the line and a NPT nipple on the other end if the line to attach my gas tester.

[sick50ford]