3" diameter 409 stainless steel construction maximizing strength and durability 409 stainless steel, high-flow, chambered mufflers offer throaty sound without the drone 4†polished 304 stainless steel, dual wall exhaust tips with embossed Flowtech logos add style to your ride Quality welds for strength, longevity and good looks Tube geometry designed for hassle-free installation Utilizes OEM mounting points for factory-like fitment