The COBB 02-07 WRX/STi Catback Exhaust is designed for the verified vehicle applications listed below. Match manufacturer part number 512100, complete year, make, model, application, engine and transmission configuration, required calibration, emissions eligibility, interfaces, and every product note before ordering.

Key Features

• T304 Stainless Steel Build: Full construction from premium 304-grade stainless resists corrosion and endures high-heat conditions for long-term reliability.
• Lightweight Design: At 32 lbs, sheds over 15 lbs from stock setup to improve handling, acceleration, and fuel efficiency.
• High-Flow Muffler: Oversized 12x9x18-inch chamber with perforated core quiets harsh tones while amplifying deep WRX/STI rumble.
• Dual 4-Inch Slash-Cut Tips: Polished finish adds visual style, positioned for optimal flow and ground clearance.
• 3-Inch Mandrel-Bent Piping: Smooth bends maintain exhaust velocity, minimizing turbulence to unlock 10-15 wheel horsepower gains on stock or tuned engines.
• Bolt-on design uses all factory hangers and mounts 1-2 hours with basic tools.

Fitment

Specifications

What’s Included

One new COBB product in the exact configuration and quantity identified by manufacturer part number 512100. Calibrations, hardware, hoses, clamps, gaskets, adapters, wiring, fluids, tools, and companion components are included only when expressly stated for this exact part number.

About COBB

COBB develops engine-management, intake, cooling, exhaust, drivetrain, suspension, and vehicle-accessory products for supported performance platforms. Correct selection remains exact-vehicle, exact-configuration, exact-interface, and exact-part-number specific.

Related COBB Products

• Cobb 11-14 Subaru WRX Hatch / 08-14 STi Hatch 3in Catback Exhaust
• Cobb 11-21 Subaru WRX/STI GV/VA Sedan Catback Exhaust
• Cobb 15-19 Subaru WRX/STi Titanium 3in Catback Exhaust

Browse the COBB collection for related tuning, intake, cooling, exhaust, drivetrain, and chassis products.

Frequently Asked Questions

Will this COBB product fit my 2002-2007 Subaru Impreza WRX?
That application is listed, but confirm the exact part number, engine and transmission configuration, factory equipment, required calibration, emissions eligibility, and every manufacturer note before ordering.

Are all supporting parts included?
Only components expressly listed for the exact manufacturer part number are included. Tuning, hardware, hoses, clamps, gaskets, adapters, wiring, fluids, and companion components may be separate.

Is tuning or calibration required after installation?
Requirements depend on the exact product and vehicle. Intake, fuel, boost, turbo, and engine-management changes may require a compatible calibration before operation.

Installation Instructions

Follow the current COBB and factory service instructions for this exact part number. Verify fitment, factory equipment, emissions eligibility, required calibration, software and firmware, interfaces, hardware, fluid or electrical connections, and clearances before installation. Inspect the completed work and confirm safe operation before full-load use.