The KENWOOD eXcelon KFC-X183C is a 6-1/2-inch oversized custom-fit 2-way speaker system designed as an upgrade for factory audio systems. It features a polypropylene cone with Diamond Array Pattern, a 1-inch soft-dome tweeter, 80W RMS power handling, 280W peak power, and included multi-use and 6x9-inch brackets for flexible installation.