These CS-Series 6x8-inch Coaxial Speakers are the perfect way to upgrade your factory system. CS-Series Coaxials deliver remarkable performance and ultra-clean bass with a heavy-duty motor/magnet structure not found in stock speakers. A stamped-steel frame supports a rigid polypropylene cone with EVC (Extended Voice Coil) technology for the best sonic quality. Using zero-protrusion PEI tweeters with neodymium magnets, you get the clarity you need without interfering with factory grilles. These CS speakers work best with 75 watts of recommended power.General Features:Fits nearly every car madeZero-protrusion tweeters to fit nearly any factory depthWoofer EVC tech assists with precise linear excursionUV-treated poly-foam surroundResists heat or direct sunlightLarge woofer magnet in a heavy-duty motor for ultra-clean bassPEI-tweeter construction provides superb clarityNeodymium tweeter magnets2-Way Speaker Design.5" Balanced Dome Tweeter3.5 Ohm DC Resistance225W Peak Power75W RMS Power90dB Sensitivity45-20kHz Freq Range5x7-3/16" Mounting Hole Diameter3/8" Top Mount Depth2-3/16" Bottom Mount DepthPolypropylene Woofer Cone MaterialPolyester Foam Surround