Borla 140505 Touring Cat-Back Exhaust System for BMW 325i, 325xi, 328i and 328xi

System features polished T-304 stainless steel tips. Borla(r) Cat-Back(tm) & Axle-Back exhaust systems feature patented straight-through and multi-core technology designed to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive Borla(r) Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium T-304 stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer-controlled CNC manufacturing ensures an accurate fit. Best of all, Borla(r) stands behind every system with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand. Touring Cat-Back(tm) Exhaust System 2006 BMW E90/ E91 325i/ 325xi 3.0L 6 Cyl. Auto./ Manual Trans. Rear Wheel & All Wheel Drive 4 Door/ 2007-2011 BMW E90, E91 328i/328xi 3.0L 6 Cyl. Auto./ Manual Trans. Rear Wheel & All Wheel Drive 4 Door. Million Mile Warranty 2006 BMW E90/ E91 325i/ 325xi 3.0L 6 Cyl.. Automatic/ Manual Transmission Rear Wheel & All Wheel Drive 4 Door/ 2007-2011 BMW E90, E91 328i/328xi 3.0L 6 Cyl.. Automatic/ Manual Transmission Rear Wheel & All Wheel Drive 4 Door.

Upgrade your BMW with the Borla 140505 Touring Cat-Back Exhaust System, engineered for select E90 and E91 325i, 325xi, 328i, and 328xi models. This system is designed to improve exhaust flow, throttle response, and driving enjoyment while delivering Borla’s refined Touring sound. Polished T-304 stainless steel exhaust tips provide a clean, durable appearance that complements the vehicle’s original styling.

Borla’s patented straight-through and multi-core technology helps reduce exhaust restriction and increase exhaust velocity for responsive performance. Ultra-smooth mandrel bends maintain consistent internal diameter through the system, supporting efficient airflow and reliable power delivery. Precision CNC manufacturing contributes to an accurate fit, while premium T-304 stainless steel offers strong corrosion resistance and long-term durability compared with lower-grade exhaust materials.

The Borla 140505 is intended for rear-wheel-drive and all-wheel-drive BMW applications with automatic or manual transmissions, as specified in the fitment information. This Touring Cat-Back system replaces the exhaust components from the catalytic converter rearward and is built for a practical balance of performance, sound, and everyday drivability. Borla backs the system with its Million-Mile Warranty for additional long-term confidence. Professional installation is recommended, and vehicle configuration should be verified before ordering.

What's Included in the Box

One Borla 140505 Touring Cat-Back Exhaust System with polished T-304 stainless steel exhaust tips and vehicle-specific exhaust components. Installation hardware and instructions are included as supplied by the manufacturer.

Fitment

Fits select 2006 BMW 325i and 325xi E90/E91 models, as well as select 2007–2011 BMW 328i and 328xi E90/E91 models with 3.0L six-cylinder engines, automatic or manual transmissions, rear-wheel drive or all-wheel drive, and four-door configurations. Confirm exact vehicle application before installation. This product may require applicable emissions or regulatory acknowledgment depending on the installation location.

Features:

• T-304 Stainless Steel Construction: Premium stainless steel provides excellent corrosion resistance, durability, and long-term performance.
• Patented Straight-Through and Multi-Core Technology: Helps improve exhaust flow and velocity for responsive performance and enhanced driving excitement.
• Mandrel-Bent Tubing: Ultra-smooth bends maintain consistent airflow and reduce internal restriction through the exhaust system.
• Touring Sound and Million-Mile Warranty: Produces Borla’s refined performance tone while being backed by the manufacturer’s Million-Mile Warranty.

Fitments:
2006 BMW 325i Base
2006 BMW 325xi Base
2007 BMW 328i Base
2008 BMW 328i Base
2009 BMW 328i Base
2010 BMW 328i Base
2011 BMW 328i Base
2012 BMW 328i Base

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1