Flow Tech's Warlock 3" inlet and 3" outlet racing muffler may be too much for mere mortals. The high flow, low?restriction patented 3?pass?tube design provides lots of horsepower and a mean and nasty sound. The Warlock lets you remove its flow intensifier bypass cap for un?restricted, unbelievable straight?through power. This muffler is fully-welded 16-gauge ribbed case for added strength and reduced sound.