X2 Ab Ripper in P90X2 Video Review February 10, 2012 By Perry Tinsley Leave a Comment I've been doing the X2 Ab Ripper routine from P90X2 and I be many people are wondering how it compares to the P90X Ab Ribber X (ARX) routine. So, I have to be honest and say I struggled a bit more in …Continue Reading about X2 Ab Ripper in P90X2 Video Review