THis is the most aggressive muffler Black Widow offers. The Race Venom 6" (a.k.a. "Angry Housewife") packs a mean, deep punch with the same design and sound characteristics as our other mufflers. With a compact footprint, it is ideal for tight spaces. And the Black Widow's patented internal hourglass design reduces the opportunity for drone. All Widowmaker mufflers are backed by Black Widow’s Lifetime Limited Warranty.