Quote: Personally I would never run a rocker that wasn't either bronze bushed or roller bearing. I don't like running aluminum on a steel shaft - seen too many cases of galling. I don't know what your concern would be with rollers bearings. As for cryo treatment ... it works. Whether its needed or worth the expense is entirely personal.
My concern with roller bearings is longevity. It seems like most of the forces on the rocker arm would be concentrated on only some of the bearings and would wear them faster than the others. I was very interested in getting steel or iron rockers and getting them bushed, but I've only read about 1 place that does it, RAS, and I have no idea if they still do it or if its even the same company or owner
