For those looking to push the limits of what's possible on the water, FatSac's plug and play ballast bags are the easiest way to upgrade your wake. Compatible with almost every Malibu and Axis boat since 2010, these bags plug into the existing connectors in your storage compartments and you're ready to go! And since they lie flat when not in use you'll never feel like you're sacrificing storage space. This 400 lb sac fits perfectly inside the storage lockers on either side of your engine. It is sold individually so if you're just getting started, you'll want to order two of them.