KORSH Catless Downpipe

KORSH Catless Downpipe – Subaru WRX / STI / Liberty GT / Forester XT

The KORSH Maximum Performance Catless Downpipe is engineered for a wide range of Subaru turbocharged models, including the WRX STI (2008–2021) and WRX (2008–2014). Designed strictly for track and competition use, this high-performance exhaust component features a full 76mm (3.0") bore to deliver completely unrestricted flow, allowing your turbocharger to spool faster and reach its full power potential.

By utilising a high-quality cast bellmouth head and a true 3-inch (76mm) diameter throughout, this downpipe provides superior internal geometry compared to standard fabricated units. This design reduces turbulence exiting the turbocharger, resulting in maximum throttle response and significant gains in both power and torque for the EJ-series engine.

Key Features

• Full 76mm (3.0") Bore: Maximises exhaust gas volume and velocity, essential for high-boost and motorsport applications.
• Cast Bellmouth Head: Optimised internal cavity improves exhaust gas transition and flow efficiency directly from the turbo turbine outlet.
• Unrestricted Flow: The catless design eliminates the primary exhaust restriction, making it the premier choice for high-horsepower competition builds.
• Mandrel-Bent Tubing: Precision 76mm mandrel-bent stainless steel ensures a consistent diameter is maintained, removing restrictive bottlenecks.
• Global Compatibility: Specifically engineered to clear steering components on both Right-Hand Drive (RHD) and Left-Hand Drive (LHD) vehicles.
• Durable Construction: Built using heavy-duty stainless steel to withstand the extreme heat and vibration of spirited circuit use.

Specifications

• Material: High-grade Stainless Steel
• Diameter: 76mm (3.0")
• Design: Cast Bellmouth with Mandrel-Bent Piping
• Type: Catless / Race-Only
• Fitment: RHD and LHD Compatible

What’s Included

• 1 x KORSH 76mm Catless Downpipe
• Installation Hardware and Gaskets

Important: This catless downpipe is designed for off-road, track, and competition use only. Please check your local emissions regulations and state laws before installation as this product is not intended for street use. Note: For Liberty and Forester models, this kit is compatible with Manual transmissions only.