(4) Kicker 40CS654 CS65 6.5" 300 Watt 2-Way 4-Ohm Car Audio Speakers + Rockmat Package Includes: (2)Pairs of KICKER 43CSC654 CSC65 6.5" 6-1/2" 1200w 4-Ohm Car Audio Coaxial Speakers, (1) Rockville Rockmat RM12-B 12 Sq Ft Sound Dampening/Deadening Butyl Rubber Car Kit. Pair KICKER 43CSC654 6.5" 6-1/2" 300w 4-Ohm Car Audio Coaxial Speakers. Speaker Design: 2 - way. Woofer Size: 6 1/2 in. (160 mm). Tweeter Size: 1/2 in. (13 mm). DC Resistance: 3.3 ohms. Peak Power: 300 Watts per speaker / 600 Watts per pair. Continuous Power (RMS): 100 per speaker / 200 Watts per pair. Recommended Power Range: 10 - 100 watts RMS per channel. Features EVC (Extended Voice Coil) technology - immediate improvement above OEM. Stamped Steel Frame Basket. Impedance: 4 ohms. Sensitivity: 90 dB @ 1W, 1m. Effective Frequency Range: 40Hz - 20kHz. Mounting Hole Diameter: 4 13/16 in. (123 mm) .Top Mount Depth: 3/8 in. (9 mm). Bottom Mount Depth: 1 11/16 in. (43 mm). Grilles: Yes. Tweeter Magnet Material: Neodymium. Includes: 4 Sheets of Rockmat Sound Dampening Material (3 square feet per sheet), Roller for a perfect installation. Rockville Rockmat RM12-B 12 Sq Ft Sound Dampening/Deadening Butyl Rubber Car Kit. Contains 4 sheets of sound damping material  Each sheet is 12" inch x 36" inch (3 sq. ft. per sheet). Paintable Surface. Recommended for use as a door kit or trunk lid kit. Increases SPL  The use of our Rockmat will not only make your sound more clear and eliminate distortion but it will make your music louder by. Eliminates sound leakage! Improves Bass Quality and Reduces Bass Distortion. Kill unwanted noise, rattles, vibrations. Reduce exhaust and engine noise. Aluminum-coated for heat-resistance. 72mil thickness. Full car installation reduces unwanted noises 5-8 dB. We use the highest quality high-tack self-adhesive to make your installation quick and easy!