[dvcobra]

Over the past 4 years I have removed and reinstalled the side pipes several times for different reasons. I noticed each time that the bolts became very brittle due to the temperatures and most will snap when trying to unbolt them (I use Conical Top locknuts to eliminate vibrating loose). I switched to grade 8 bolts hoping they would hold up better to the high temp. but this didn't work. In fact, I put new bolts on 1 month ago and while driving on the freeway the side pipe broke loose and was hanging only by the bolt by the rear tire. Yes, this could have been disasterous, I lucked out that there wasn't any damage. I found 1 of the bolts and found that it became brittle and snapped in half.
What kind of bolt will hold up to the heat? Has anyone else had this problem?