ok
For the record I sell them also but that said, to the original poster. We have them on our own 700 lift roller motors for almost 2 complete seasons of hard bracket racing with no issues to report so far. Would I run them on a BIG roller, no that is either Jesel or T/D. But under 700 lift so far so good. I would also say that the roller rockers are good for 750ish lift. NOW
Randy Jr himself (the big man at Harland Sharp) said he would not suggest them on cams as big as we are running but think of us as the test mules.
Todd