HKS 3112-EX005 Carbon-Ti Hi-Power Catback Exhaust for 2002-2007 Subaru WRX/STI

Vehicle Fitment

• 2002-2007 Subaru WRX (Turbo AWD, EJ20/EJ25)
• 2004-2007 Subaru WRX STI (Turbo AWD, EJ25)

Features

• HKS Carbon-Ti Hi-Power catback exhaust system
• Race-inspired offset muffler layout for improved flow
• Carbon fiber wrapped muffler body for reduced weight
• High-flow 3" (75 mm) stainless steel piping
• 120 mm HP-Ti titanium exhaust tip for aggressive style
• Deep, throaty exhaust tone with improved mid-range response
• OEM hanger-based bolt-on installation
• Includes gaskets and mounting hardware for direct fit

Specifications

• Part Number: HKS 3112-EX005
• Exhaust Type: Carbon-Ti Hi-Power catback
• Piping Diameter: 75 mm (3")
• Tip Diameter: 120 mm (HP-Ti titanium)
• Material: SUS304 stainless steel piping, carbon fiber muffler housing
• Exhaust Outlet: Angled single rear exit
• Fitment Notes: May not clear vehicles with optional Subaru rear differential skid plate
• Engine Compatibility: Turbocharged EJ20/EJ25 (AWD drivetrain)

Included Components

• 1x HKS Carbon-Ti Hi-Power catback exhaust assembly
• 1x Exhaust gasket set
• 1x Hardware kit (bolts, nuts, clamps)
• Installation instructions

Product Description

The HKS 3112-EX005 Carbon-Ti Hi-Power Catback Exhaust is a premium performance exhaust designed for Subaru WRX (2002-2007) and WRX STI (2004-2007) turbo AWD models. Engineered to lower backpressure and increase exhaust flow compared to stock, this HKS Hi-Power system uses a straight-through 3" piping layout and a carbon fiber wrapped muffler body to support stronger mid-range boost response and high-RPM power delivery. The aggressive exhaust note enhances the driving experience without sacrificing everyday usability.

Constructed with durable SUS304 stainless steel piping and a striking 120 mm titanium tip, the system provides both performance and aesthetic upgrades. The bolt-on design uses factory mounting points and includes all necessary gaskets and hardware for installation. Note that the optional Subaru rear differential skid plate may interfere with fitment on some vehicles - clearance should be verified before installation.