Borla 05-08 Subaru Legacy GT Cat-Back System

This Borla cat-back exhaust system is built for the verified 2005-2006 Subaru Legacy GT application listed below. Select it by exact manufacturer part number 140123 and confirm the full engine, drivetrain, body, wheelbase, factory-exhaust, and Borla application notes before ordering.

Key Features

• T-304 Stainless Steel Construction: High-quality austenitic material resists corrosion and handles turbo exhaust heat for long-lasting durability.
• 2.5-inch Tubing Diameter: Mandrel-bent pipes increase airflow for power gains, improved throttle response, and engine efficiency.
• Bolt-On Installation: Direct fit with all-welded assembly ensures easy setup without cutting or welding.
• Split Rear Exit with Polished Tips: Large 4.25-inch oval embossed rolled-edge tips provide motorsport styling and aggressive exhaust note.
• Straight-Through Muffler Design: Reduces backpressure for torque boost, lighter weight versus OEM, and heart-pounding soundtrack.
• Bolt-on design uses factory hangers; no modifications needed for 2005-2009 Legacy GT.

Fitment

Specifications

What’s Included

One new Borla product identified by manufacturer part number 140123. Clamps, hangers, gaskets, tips, pipes, tools, and companion parts are included only when expressly listed for this exact part number.

About Borla

Borla develops stainless-steel exhaust systems, mufflers, tips, pipes, and related components for vehicle-specific and universal performance applications. Product selection remains exact-application and exact-part-number specific.

Related Borla Products

• 1996-2001 Subaru Impreza Cat-Back Exhaust System S-Type Part # 14885
• Borla 2018-2022 Ford Mustang GT Cat-Back Exhaust System Touring- Rolled Polished Tips
• Borla 2024 Ford Mustang GT 5.0L V8 w/ Active Exhaust ATAK Cat-Back Exhaust System

Browse the Borla collection for related exhaust systems and components.

Frequently Asked Questions

Will this Borla part fit my 2005-2006 Subaru Legacy GT?
That application is listed, but confirm the engine, drivetrain, body or cab style, wheelbase, factory exhaust layout, tip opening, and every Borla application note before ordering.

Will this change require an engine tune?
A cat-back, axle-back, tip, muffler, or post-catalyst component usually does not require tuning, but confirm the exact application, emissions configuration, oxygen-sensor locations, and local requirements before installation.

What should I inspect before installation?
Check the shipping carton and components against the exact part number, then inspect clamps, hangers, gaskets, mating flanges, clearances, tip alignment, and required reused factory hardware before removing the original exhaust.

Installation Instructions

Follow the current Borla instructions and vehicle service information for this exact part number. Let the exhaust cool, support the vehicle safely, compare all parts before removal, protect sensors and wiring, use the specified clamps and torque values, align all joints and tips without preload, confirm body and suspension clearance, check for leaks, and retorque after the first heat cycles. Professional installation is recommended.