I think I have had a roller cam follower come apart.

[Megadan]

Originally Posted by XLsior

I tried the rollers on a stock cam...
they were quieter at idle and cold start but unnoticeable when riding/operational.


I went back to stock flat followers after seeing witness marks on the cam which I put down to the increased reciprocating mass of the roller heads...They were DYNOP aliexpress brand...


I felt no performance gain using them. If anything it felt like I lost power at the top end. So made the recommendation to others not to use them with the stock cam along with the fact the stock pushrods were to long...which meant either shorter rods or shimming up the valve rocker assembly.

There is no performance gain from them. What it really helps with is the reduced need for zinc in the oil. The valves are so loud anyway I doubt anybody could hear a diference in noise level.

The pushrod problem is interesting. I notied no difference on mine.