NPR makes an exellent ring. Most aftermarket piston like Arias, JE, and others use this rings.
How do I know this you ask? Well after having issues with JE and a set of rings they provided, I went to the NPR warehouse to pick some up. JE sucks as a company and they sent me to Arias to get rings for JE pistons because Arias cares for the little people like the JE tech told me over the phone! :nono: :wtf: They gave me the wrong rings, they change the piston design and didn't bother to change the rings and Arias has to clean up after them. I hate JE they suck and I hope they go out of business! :rant2: