Parker1 and Rattle m up, I had the same question. I am going over this week to pick my new Outback and really want to put the ZE on it. I have had one on my Q2 for the past 3 years and I can't imagine anything better. I e-mailed Muzzy about it and the tech wrote back and said that the 600 LI ( the ZE for the Mathews roller guards) works perfectly on the Outback. He said that it sets up exactly like it does on the other roller guard bows ( Legacy, LX etc.) He also said that the Outback is one awesome bow. He brought 2 of them back from the show. I can't wait to get mine with the ZE on it!!