You would think that Hayden would make something like the M6 tensioner we use on Evos.
They do.,, been running an M6 on my twin cam for years.
What are M6 M7 ones?
Google 'hayden' primary chain tensioner. They have been around since the Evo days and are bloody awesome.
Put a Hayden Tensioner on my Glide years ago, is fine still, but only a cam etc. up grade.