Korsh - Twin Scroll Headers: Subaru WRX/STI/Forester/Liberty EJ

Engineered for high-performance Subaru WRX STI applications, this Korsh Twin Scroll stainless steel exhaust manifold delivers superior flow characteristics and durability. The twin scroll design optimizes exhaust gas velocity, enhancing turbo spool response and overall engine efficiency. Constructed from premium stainless steel, it resists corrosion and thermal stress while maintaining structural integrity under demanding conditions. Built to exacting standards for reliability and performance, this manifold is the choice for serious enthusiasts seeking quality upgrades.

Contents of Kit:

• Exhaust Manifold
• Up-Pipe
• Turbo Gaskets
• 50' x 2" Exhaust Wrap
• Hardware Kit

Fitment Notes:

• This header will remove the "Boxer" rumble.
• 2002-05 WRX: Requires a 2.5L STI oil pan.
• 2006-07 WRX: Requires an STI oil cooler and STI oil pan.

Applications:

• 2002-2014 Subaru WRX
• 2004-2021 Subaru STI
• 2005-2009 Subaru Liberty GT
• 2004-2008 Subaru Forester XT

• Design: Equal Length, Twin Scroll
• Material: Stainless Steel SUS304 with Wax Cast Flanges
• Outer Diameter 42.7mm, Thickness with 2.0mm thick wall
• Outer Diameter 60.5mm, Thickness with 2.0mm thick wall
• Engine - 10.45mm, Turbo - 12.95mm