Kicker 40cwr122 is also a shallow mount subwoofer that has an extra strong bass. This sub is less than 3.5 inches in height. It is equipped with a cone made by rigid polypropylene. It has a tough rubber surround on it, that keeps it on size after hours of playing or even during extended play. It makes the subwoofer very hard. This sub will also fit in any tight space of your car. So this subwoofer is much recommended for you if you don’t have much space in your car.