This system is constructed of 1-5/8 IN - 2-1/2 IN mandrel-bent 304 stainless steel tubing for maximum strength and durability. Includes dual EPA compliant catalytic converters which are less restrictive than the factory converters providing maximum flow. Factory style laser cut machined flanges are used used for a secure leak-free seal. Utilizing factory style flanges this system is designed to fit in the stock locations with no cutting or modifications required for a hassle-free installation. State-of-the-art computer-aided design technology is utilized for precise vehicle fitment. 100% MIG-Welded for race-proven strength and durability.