Banks Power 01-04 Chevy 6.6L SCLB Monster Exhaust System - SS Single Exhaust w/ Black Tip100 Percent stainless, not aluminized! 4 inch mandrel bent pipe improves flow up to 176 Percent with virtually no back pressure. Side Single exit Cerakote Black rolled edge tip. Muffler's expansion chamber cuts the drone. Physical fitment. Why consider a cheap, ill fitting aluminized exhaust? Banks 4 inch Monster Exhaust is made of rugged, long lasting 100 percent stainless steel. It fits better than the competition, because Monster Exhaust utilizes