X ThunderLink might just be the easiest way to add bass to your ride. The 10" Woofer and Passive Radiator Tuning make big bass in a package small enough for nearly any vehicle—sedan, coupe, SUV, pick-up, you name it! The built-in X ThunderLink amplifier works with almost any factory radio or aftermarket system with no extra adapters or converters to buy. It even has a convenient wired remote so you can control your bass from the driver's seat!