OverviewThe Hooker Maximum Flow muffler actually flows 99% and produces more horsepower and torque than a 2-1/2" open pipe. The Maximum Flow is constructed of an aluminized steel case with stainless steel internal core and uses a high temperature packing material to absorb excessive noise while allowing a mellow powerful sound. As with all absorption type silencers, the Maximum Flow will be most effective for sound control with lower compression (8.5 to 1 and lower) motors with conservative Camshafts and with applications using catalytic converter(s). The Maximum Flow flows either direction, allowing for easy installation.Features Feature intricate stainless steel, robotic weld seams Single 3" Offset Inlet Single 3" Offset Outlet 4-3/4"H x 10-1/4"W x 14"L 16 Gauge Fully Welded Aluminzed Steel Case Stainless Steel Perforated Exhaust Core Bi-Directional Exhaust Flow Design High Temp Packing Material Absorbs Excessive Noise while Allowing a Mellow Powerful Sound ApplicationSpecs Brand Hooker Emission Code 5 Inlet Diameter (in) 3 Inlet Position Offset Muffler Type Glass Pack Outlet Diameter (in) 3 Product Type Muffler Type of Muffler Glass Pack Warning California Proposition 65