From the earliest days of Mapex, until the great refesh in 2010, all Black Panther snares came with either 2.3mm Triple-flange "Powerhoops" or Die-Cast hoops, depending on the model. Triple-flange hoops are still the hoops of choice for 99% of Mapex's kits. As the Mapex 2004 catalague says...

Take your best rimshot with confidence.

Made from 2.3mm chrome steel, the Mapex Powerhoop provides flex resistance without adding additional weight.

Less resting weight on the drums’ precision bearing edge reduces the muting associated with die-cast hoops.