rpm are good but there have been a few issues lately with them as wel. i ran the FLM kit for awhile and it was good but metal is not meant to be in areas where flex is needed. i sold them of and went back to stockers. cant beat the price and performance is great. only replaced 2 on three savages this summer. and that took alot to break two. if your set on rpm go for it but i think stock performs great.