KICKER KS-Series Speakers let you play at concert-like volume, yet maintain the smoothness and subtlety to please even the most selective ear. The high-performance woofers utilize internally dampened polypropylene cones and tough rubber surrounds for outstanding midrange detail and pounding bass! All KS-Series woofers feature an ultra-slim mounting depth to easily fit in most factory speaker locations. The 51KSC2704 Full-Range Midrange/Tweeter Speaker System mounts effortlessly in select domestic and import models, thanks to an ultra-thin speaker design and included brackeyt mounting system. The speaker system combines easy installation and acoustic perfection to achieve Concert-Level realism and volume. 2.75" (70mm) UV-Treated Paper Midrange/Tweeter with tough Rubber Surround fits select GM, Chrysler, Subaru, Toyota and Jeep factory speaker locations. Installation brackets for select GM/Chrysler/Subaru/Jeep and Toyota included. Thin-mount design easily fits behind factory grilles; 1.25" (32mm) mounting depth. Recommended Amplifier Power: 15 - 50 Watts RMS | Peak Power Handling: 100 Watts | Sensitivity: 85dB 1W/1M | Frequency Response: 300 Hz - 20 kHz | Nominal Impedance: 4-Ohms