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.. aFe 98-05 Lexus GS300 / 01-05 Lexus IS300 Twisted Steel 304 Stainless Steel Header w/ Cat. Twisted Steel 304 Stainless Steel Short Tube Header Lexus IS300 01-05 L6-3.0L. Heavy Duty Laser Cut Machined Flanges are used for a Durable Leak-Free Seal. Works with Factory Exhaust System with No Modifications Necessary. Twisted Steel 304 Stainless Steel Short Tube Header. Utilizes Dual EPA Compliant Catalytic Converters. 100% MIG-Welded for Strength and Durability. Twisted Steel Header

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