Precision honeycomb design maximizes air flow and amps up your car's horsepower, while still complying with air quality restrictions. And, for California drivers, we have a cat that passes your state's rigorous smog standards. Our TL cat converters are cut to your car's specs, so they bolt onto your exhaust with no welding or pipe bending. And, a 5-year, 50,000-mile warranty means your ride's ready to roll for the long term. Join our legions of customers who return to us time and again for the best automotive products on the market!