aFe Twisted Steel 304 Stainless Steel Header w/ Cat - 13-19 Outback H4-2.5L, 13-19 Legacy H4-2.5L

1-5/8 IN - 2-1/2 IN 304 Stainless Steel Construction:
This system is constructed of 1-5/8 IN - 2-1/2 IN mandrel-bent 304 stainless steel tubing for maximum strength and durability.

Catalytic Converter:
Includes a catalytic converter which is less restrictive than the factory converter providing maximum flow.

Installation:
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.

Optimized Tube Lengths:
Tube lengths are optimized for true pulse control technology which improves flow and performance.

Formed Collector:
Formed collectors decrease turbulence and increase exhaust velocity. The result is increased horsepower, torque and improved throttle response.

Computer-Aided Design:
State-of-the-art computer-aided design technology is utilized for precise vehicle fitment.

TIG-Welded:
100% TIG-Welded for race-proven strength and durability.