I posted it,over at Honda Twins and one of the gurus said to always use antisieze on all exhaust studs.
Is the reason these break because they bottom out in the head, or is it because after so many heat cycles they weaken?
I noticed the same Honda part number was used on the old CBX 6 cylinder bikes too, no breakage pattern there, but likely less strain distributed over 12 studs than 4...
I wonder if new nuts would be best? Stockers or Ti?
92 CB250 Nighthawk - partsbike
93 CB250 Nighthawk - partsbike
92 CB250 Nighthawk - project
78 CB400T - partsbike
81 CM400C - Project, on the road
73 CB750K3 - Long term project