WakeMAKERS 2015 Tige RZR BagBuster Rear Factory Ballast Upgrade Kids The Enzo Surf sac was The Enzo Surf sac was designed to start in the rear locker and continue through an opening in the rear seat bulkhead which leads forward under the side passenger benches Low Drag Design Asher Balance Fin Reduced fin length for quick turn rotation combined with a new distribution of surface area for great cross course direction The WakeMAKERS FIT Series ballast bags included in this Factory Ballast Upgrade will be integrated directly into your boat's existing ballast system for automated filling draining This WakeMAKERS Factory Ballast Upgrade adds additional capacity to your boat's factory ballast system by replacing the stock ballast bag with a higher capacity ballast bag