In an effort to speed up the fill and drain times of the ballast systems on their boats, Mastercraft designed the FastFill system. The X-Star was the first to receive this option in 2018, but the option was made available to all X and XT Series models as an option in 2019.
The easiest way to determine if your boat is equipped with the FastFill system is to look at the fitting son the ends of the hoses that connect to your factory ballast bags.
You have the FastFill system If your fittings look like this:
If your fittings look like this you have the standard ballast system Mastercraft offers: