Clogged and damaged catalytic converters kill performance and cause failed smog checks. This especially rings true in states that abide by the CARB emissions standard. If your ride is ridin’ dirty, clean it up with Magnaflow Catalytic Converters. These 50-state-legal converters a built from tough stainless steel, filled with precious metals and out-flow stock converters to increase performance. 5-year, 50,000-mile external warranty; 2-year 25,000-mile internal warranty.