Korsh Unequal Length Headers - Subaru WRX / STI / Forester / Liberty (EJ20/25)

Korsh Unequal Length Headers — Subaru WRX / STI / Forester / Liberty (EJ20/EJ25)

Korsh Unequal Length Headers are engineered specifically for EJ20 and EJ25-powered Subarus to unlock measurable performance improvements. The strategically designed unequal length configuration optimises exhaust scavenging for sharper throttle response, faster turbo spool-up, and enhanced power delivery across the rev range. Constructed from 304 stainless steel with cast flanges for a perfect, leak-free fit — built to handle sustained high-temperature operation on both street and track.

Best of all, the unequal length design retains the iconic Subaru boxer exhaust sound.

Suits:

• Subaru WRX (EJ20 / EJ25)
• Subaru STI (EJ20 / EJ25)
• Subaru Forester (EJ20 / EJ25)
• Subaru Liberty / Outback (EJ20 / EJ25)

Kit Includes:

• 1x Unequal length exhaust manifold (304 stainless steel)
• 1x Up-pipe
• All gaskets and hardware

Specifications:

• Material: 304 stainless steel
• Flanges: Cast — precision fitment, no warping
• Design: Unequal length (UEL) — retains iconic boxer exhaust note
• Benefits: Faster turbo spool, improved exhaust flow, better throttle response
• Fitment: Direct bolt-on — all gaskets and hardware included
• Warranty: 2 years

Available Part Numbers:

• KOR-EXH-UEL-001 — Korsh Unequal Length Headers, Subaru WRX / STI / Forester / Liberty (EJ20/EJ25)

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
• ✅ Unequal length design retains the iconic Subaru boxer exhaust note
• ✅ Complete bolt-on kit — all gaskets, up-pipe, and hardware included
• ✅ 2-year warranty — backed by Korsh for peace of mind on every purchase