[400TT]

Zedn, crush tubes and the bolts that mount the suspension brackets bolt right through the crush tubes with hardened washers & nylocks.

To solve the problem of dissimilar metals we use and recommend anti-seize for threading rod ends etc into aluminium suspension arms. And loctite on everything else that does not have jam/lock nuts.

This is ample from our experience.

There are other products that are suitable, these are just the ones we use.