Equal Length Header & Up Pipe for Multiple Subaru Fitments

• 2004-2008 Subaru | Forester XT
• 2015–2021 Subaru | WRX
• 2015–2021 Subaru | WRX STI
• 2005-2009 Subaru | Legacy GT

The IAG Equal Length Header and Up Pipe is a 4-2-1 equal length exhaust header for Subaru models listed in the fitment information on this page. The free-flowing design improves turbo spool by 300 rpm and improves exhaust flow across the entire RPM range.

• Configuration: 4-2-1 with equal-length tubing and merged collector
• Material: 304 stainless steel, including cast stainless flanges, fully TIG welded
• Pipe diameter: 45mm
• Slip-joint expansion section accommodates flex caused by heat cycling
• Includes IAG 60mm up pipe with 3-bolt cast flange and multi-layer gasket between the manifold and up pipe
• Part number: IAG-EXT-1001

Q: Does this header fit my Subaru?

A: Check the fitment information on this page for your exact model and year before ordering.

Q: What is included?

A: The package includes (x1) equal length stainless steel header, (x1) 3-bolt stainless steel up pipe, (x1) 3-bolt up pipe gasket, (x3) up pipe to manifold zinc plated bolts and nuts, (x5) up pipe to turbo threaded studs, (x1) EGT plug, (x6) copper flange nuts and (x2) manifold to cylinder head gaskets, plus a up pipe to turbo gasket.

Q: Will this header change my exhaust sound?

A: Yes. The equal length design alters the exhaust tone from the distinct boxer rumble to a smoother exhaust note.

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