KORSH Subaru WRX & STI Exhausts

• KORSH Subaru WRX & STI (GE/GH/GR/GV)
• KORSH Subaru WRX & STI (VA)
• KORSH Performance Exhaust (full range)
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Subaru fitment is set by chassis code, so check yours before ordering.

• GD/GG - WRX and STI of this generation use their own catted and catless downpipes.
• GE/GH/GV/GR - sedan and hatch WRX, STI (GR/GV), Forester XT (SH) and Liberty GT (BP/BL) share downpipe options; turbo-back systems are listed separately for GH/GR and GV.
• VA - WRX and STI VA have dedicated turbo-back and cat-back systems in stainless or titanium; the catted J-pipe suits WRX (VA), Levorg (VM) and Forester XT (SJ).
• VB - the current WRX has its own stainless or titanium cat-back.
• Headers and up-pipes - equal length, unequal length and twin scroll 3-bolt options cover WRX 94-14, STI 02-21, Liberty GT 05-09 and Forester XT 04-08. Confirm whether your turbo flange is single or twin scroll.
• Boxer coupes - unequal length headers are listed for Subaru BRZ / Toyota 86 12-21 and BRZ / GR86 2022+, with a cat-back for ZC6/ZD8/ZN6/ZN8.
• Pipe sizing - 3 inch adapters are available to join a downpipe to a 3 inch system or to an OEM cat-back.

Installation by a professional workshop is recommended. Exhaust work needs the vehicle safely raised and supported, and access to the turbo, gearbox crossmember and hanger mounts.

• New gaskets, nuts and bolts where the originals are corroded or stretched.
• Penetrating fluid and anti-seize for turbo and flange fasteners.
• A torque wrench and the correct sockets for flange and hanger hardware.
• Catless downpipes and TGV deletes may affect emissions compliance and engine management; check the rules that apply in your state and have tuning carried out by a qualified tuner.

What is the difference between a cat-back and a turbo-back system?
A cat-back replaces the exhaust from the catalytic converter rearwards. A turbo-back replaces everything from the turbo outlet back, including the downpipe.

Do you stock titanium KORSH systems?
Yes. Titanium cat-back and turbo-back systems are listed for WRX VB, WRX/STI GV/VA and WRX VA alongside the stainless versions.

Which downpipe suits my Subaru?
Match the chassis code: GD/GG models use one downpipe range, while GE/GH/GV/GR WRX, GR/GV/VA STI, Forester XT SH and Liberty GT BP/BL use another. Catted and catless versions are offered.

Can I keep my factory exhaust with a new downpipe?
A 3 inch downpipe to OEM cat-back adapter is listed for joining a KORSH downpipe to a standard rear section.