Ok many people have concerns about the history of aluminum tanks cracking. Here are our new mounts that come with our tanks. These mounts bolt directly into the frame and then the tank bolts to the mounts. The two bolts are separate from each other allowing slight movement in the tank so frame twist wont crack the tanks. All of our tanks come with these mounts and we also sell them separate for people having a hard time getting there tank to stay in one piece. http://ironrhinodesign.com/store/catalog/p...products_id=131