I still have no clue why the Endyn site is still up. As far as I know it's down to basically one dude (Larry Widmer) selling stuff from his house. The supposed "rollerwave" pistons are basically just Wiseco stuff with a little polishing done by Endyn (no 'e' on the end...I hate misspelled crap). The price isn't that great, you might as well just go get some Wisecos.