aFe - Rock Basher 2-1/2" 409 Stainless Steel Cat-Back Exhaust System - Toyota Tacoma (2016-2020)2 1 2" 409 Stainless Steel Construction: This cat back exhaust system is constructed of 2 1 2" mandrel bent 409 stainless steel tubing for maximum strength and durability. 2 1 2" Diameter Polished Exhaust Tip: Finishing off this exhaust system is a 2 1 2" diameter 304 stainless steel clamp on exhaust tip. The tip features a laser etched aFe POWER logo for a unique style. Deep Sound: This system produces a deep sound unleashing all available horsepower