IAG Performance Unequal Length Header & Up Pipe | 2002-2014 Subaru WRX and 2004-2021 Subaru WRX STI (IAG-EXT-1000) IAG Performance

2002-2014 Subaru WRX and 2004-2021 Subaru WRX STI Unequal Length Header & Up Pipe by IAG Performance

The IAG Unequal Length Headers are the perfect way to add more performance to your Subaru WRX STI and still keep the iconic “Boxer Rumble.” The headers are fully constructed of 304 stainless steel, including cast stainless flanges! The unequal length headers feature a 45mm pipe diameter for maximum flow and performance. Due to the free-flowing design of this header, you will see gains across the entire RPM range, as exhaust flow is vastly improved. The header also features a slip-joint expansion section to accommodate for flex caused by heat cycling. Each IAG header is fully TIG welded for maximum strength.

Each header package includes the IAG 60mm uppipe that utilizes a 3-bolt cast flange and multi-layer gasket between the manifold and uppipe, providing a stable connection without exhaust leaks. The IAG Header & Uppipe adds all of the hardware and high quality, multi-layer gaskets needed for installation including specialty copper exhaust nuts, which are proven to maintain their torque even in the extreme conditions of heat cycling present at the exhaust flange.

Features

• 304 stainless steel
• Cast stainless flanges
• 45mm pipe diameter
• Slip-joint expansion section to accommodate for flex
• 60mm uppipe that utilizes a 3-bolt cast flange and multi-layer gasket
• Specialty copper exhaust nuts

Benefits

• Gains across the entire RPM range
• Louder and More Aggressive Exhaust Note

Applications

• 2002-2014 Subaru WRX
• 2004-2021 Subaru WRX STI

What’s In The Box?

• 1 – Unequal Length Stainless Steel Header
• 1 – 3 Bolt Stainless Steel Uppipe
• 1 – 3 Bolt Uppipe Gasket
• 3 – Uppipe to Manifold Zinc Plated Bolts and Nuts
• 5 – Uppipe to Turbo Threaded Studs
• 1 – EGT Plug
• 6 – Copper Flange Nuts
• 2 – Manifold to Cylinder Head Gaskets
• 1 – Uppipe to Turbo Gasket

References

• Installation Instructions

Warranty

• IAG Performance’s Limited Manufacturer’s Warranty