This bundle comprises a Stinger RKFR6 Roadkill Fast Rings 6" & 6.5" and an Audison APK 165 Ω2 Prima Series 6.5" 2-Way Component Speaker Set; AP 1 + AP 6.5 2Ω + Grilles. The Stinger RKFR6 features a 3-piece foam ring system designed to enhance speaker performance by reducing panel vibration, increasing mid-bass response, and maximizing audio output efficiency for 6" & 6.5" speakers. It includes 3 rings for mounting and absorption of unwanted reflections.The Audison APK 165 Ω2 system includes 2 crossovers dedicated to woofer and tweeter, facilitating installation. The APCX WF Ω2 crossover shapes the frequency response of the AP 6.5 Ω2, maximizing power transfer to the 2Ω coil, while the APCX TW Ω2 tweeter crossover enhances high frequencies, ensuring timbre balance. Key features include 2Ω impedance, 75 Hz resonance frequency, 25 mm mobile voice coil, and 10 mm winding height mobile voice coil.The AP 1 tweeter is equipped with an acoustic lens for balanced frequency response in the 10kHz - 13kHz range, optimized for critical OEM placements. The set comes with connection cables built into the passive crossover, featuring "OEM Integration compliant" fast-on connectors for easy and error-free installation. Enhance your car audio system with this premium speaker bundle featuring cutting-edge technology and easy integration.