Flowmaster's bolt on Cat-back exhaust system for the Jetta features Flowmaster's dBX series Laminar Flow muffler and 2.25 in. mandrel bent tubing. Construction is T409 stainless steel, and the system includes a fully polished dual stainless tip for a great performance look. Performance and mileage gains are delivered with a deep, moderate exterior sound, and a milder interior tone. A lifetime limited warranty provides you the assurance of a quality American made product.