51KSS504 [Used]

The Kicker 51KSS504 is a pair of 5.25-inch KS-Series component speakers built for drivers who want accurate, detailed sound with room to fine-tune their install. Each system separates the woofer and tweeter, letting you mount the 1-inch silk-dome tweeter on its own or combine both into a coaxial-style setup, depending on the space available in your doors or panels. Internally dampened polypropylene cones and durable rubber surrounds handle the midrange and bass with a clean, controlled sound, while the silk-dome tweeters add natural, detailed highs without harshness at higher volumes.

The woofer's removable bullet-style phase plug swaps for an adapter that lets the tweeter rotate and tilt, so you can aim high frequencies toward the listening position for better off-axis performance. A thin-mount design fits behind most factory grilles, and included grilles plus four tweeter mounting options work across a wide range of vehicles. The system is rated for 15 to 100 watts RMS, giving it enough headroom for a factory head unit or a modest amplifier upgrade. A smaller crossover keeps wiring simple, and an articulating tweeter pod comes included for surface mounting when a flush install isn't an option.