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

Korsh Twin Scroll Headers — Subaru WRX / STI / Forester / Liberty (EJ Engine)

Engineered for high-performance Subaru EJ applications, the Korsh Twin Scroll exhaust manifold delivers superior exhaust gas velocity and flow characteristics for enhanced turbo spool response and overall engine efficiency. The twin scroll design separates exhaust pulses to keep energy directed at the turbine wheel — resulting in faster spool-up, reduced turbo lag, and stronger mid-range power delivery.

Constructed from 304 stainless steel with cast flanges for a perfect, leak-free fit, this manifold resists corrosion and thermal stress while maintaining structural integrity under sustained high-temperature operation on both street and track. Every kit ships complete with all gaskets and hardware — ready to bolt on straight out of the box.

Note: The twin scroll design will remove the iconic Subaru boxer exhaust rumble in favour of a more refined exhaust character.

Suits:

• Subaru WRX (2002–2014)
• Subaru STI (2004–2021)
• Subaru Liberty GT (2005–2009)
• Subaru Forester XT (2004–2008)

Kit Includes:

• 1x Twin scroll exhaust manifold (304 stainless steel)
• 1x Up-pipe
• Turbo gaskets
• 50 ft x 2" exhaust wrap
• Full hardware kit

Specifications:

• Material: 304 stainless steel
• Flanges: Cast — precision fitment, no warping
• Design: Twin scroll — separated exhaust pulses for faster spool and reduced lag
• Fitment: Direct bolt-on — all gaskets and hardware included
• Warranty: 2 years

Fitment Notes:

• ⚠️ Twin scroll design will remove the boxer rumble exhaust note
• 2002–2005 WRX: Requires a 2.5L STI oil pan/sump
• 2006–2007 WRX: Requires an STI oil cooler and STI oil pan

Available Part Numbers:

• KOR-EXH-TS-001 — Korsh Twin Scroll Headers, Subaru WRX / STI / Forester / Liberty (EJ)

Why Korsh?

• ✅ 304 stainless steel construction — corrosion resistant and built for sustained high-temperature operation
• ✅ Cast flanges for perfect, leak-free fitment — no warping, no gaps
• ✅ Twin scroll design separates exhaust pulses for faster turbo spool and reduced lag
• ✅ Complete bolt-on kit — all gaskets, up-pipe, exhaust wrap, and hardware included
• ✅ 2-year warranty — backed by Korsh for peace of mind on every purchase