Description
ExhstSysKt
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.
Additional Information
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.
Application Summary
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.
Part Type
Exhaust System Kit
| Additional Application Notes | |
|---|---|
| • Sedan; 2.25 in. Into 2.5 in. Tubing; Incl. Connecting Pipes/Muffler/Hardware/3.19 in. Dual Round Rolled Angle-Cut Long; Dual Left Rear Exit; | |
These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.
Data: v2 - Desc: v4.2 - Upd: 2026-11-07 17:22:08
Features
Important Notice relating to US Domestic Market Trucks & Pickups
Many US-market trucks and pickups are available in multiple cab and bed-length configurations (e.g., Single Cab, Extended Cab, Double/Crew Cab, CrewMax, 5.5ft/6.5ft/8ft beds, etc.). Exhaust system fitment can vary between these chassis versions.
Where available, we list all compatible vehicles, cab types, and bed lengths in the product description. However, depending on your exact configuration, some systems may require optional extension/mid-pipes or minor modification for correct fitment.
Because of these variations, please carefully check your cab configuration and bed length before purchasing. If you are unsure, or if your vehicle has been modified, please reach out to a StreetFX agent.
(keyword: cat-back)Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Product Details
| Construction: | All Welded |
| Description: | Touring; Cat-Backâ„¢ System |
| Exhaust Type: | Cat-Back(tm) System |
| Exit Position: | Dual |
| Exit Style: | Single Split Rear Exit |
| Grade Type: | Performance |
| Inlet Inside Diameter: | 2.250 in. |
| Inlet Size (in.): | 2.25 |
| Material: | T-304 Stainless Steel |
| Muffler Type: | Straight-Through |
| Off Road Use Only: | No |
| Outlet Outside Diameter: | 2.500 in. |
| Outlet Size (in.): | 2.5 |
| Part Number: | bor140505 |
| System Type: | Cat Back |
| Tail Pipe Diameter: | 2.500 in. |
| Tail Pipe Material: | Stainless Steel |
| Tip / Outlet Finish: | Polished T-304 Stainless Steel |
| Tip Diameter: | 3.190 in. |
| Tip Size: | 3.19in |
| Title Extended: | E90/ E91 325i, 325xi/ 328i, 328xi 2006-2011 Cat-Back(tm) Exhaust System Touring Part # 140505 |
| Title: | E90/ E91 325i, 325xi/ 328i, 328xi 2006-2011 Cat-Back(tm) Exhaust System Touring |
| Tubing Diameter: | 2.250 in. |
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Borla, Borla Exhaust |
| StreetFX SKU | bor140505 |
| SFX Item ID | 4225161 |
| Accounting SKU | bor-140505 |
| Manufacturer SKU | 140505 |
| Manufacturer UPC | 808422405058 |
| Alternative References | 140505, BOR-140505 |
Exhaust System, Touring, Cat-Back, Single, Stainless Steel, Natural, Side Exit, BMW, 3.0L, Kit
Borla realizes that every driver has their own preference for the volume and character of their exhaust sound. So, if you're not happy with your factory exhaust's sound and performance, upgrade to Borla Touring exhaust systems. Made from the finest austenitic stainless steel for durability, these Touring (and rear axle-backs) deliver more of everything! They offer increased exhaust velocity for added power and driving excitement, along with that distinctive Borla Sound of Power that's respected by motoring enthusiasts everywhere. More than a hundred configurations are available—find the model designed for your vehicle.
| Product Attributes | |
|---|---|
| Brand | Borla |
| Manufacturer's Part Number | 140505 |
| Part Type | Exhaust Systems |
| Product Line | Borla Touring Exhaust Systems |
| UPC | 808422405058 |
| System Material | 304 stainless steel |
| System Style | Cat-back |
| Exhaust Type | Single |
| Exit Location | Driver side |
| System Finish | Natural |
| Catalytic Converter(s) Included | No |
| Intermediate Pipe Diameter (in.) | 2.25 in. |
| Muffler Included | Yes |
| Muffler Quantity | One |
| Muffler Configuration | Dual inlet/Single outlet |
| Muffler Style | Turbo |
| Muffler Material | 304 stainless steel |
| Muffler Color | Natural |
| Hardware Included | Yes |
| Tailpipe Diameter (in.) | 2.50 in. |
| Tip Included | Yes |
| Tip Outlet Size (in.) | 3.19 |
| Tip Quantity | 2 |
| Tip Shape | Round |
| Tip Cut | Slant |
| Tip Edge Style | Rolled edge |
| Tip Material | 304 stainless steel |
| Tip Color | Polished |
| Remanufactured | No |
| Quantity | Sold as a kit. |
| Special Attention | It is illegal to install parts or components that bypass, defeat, or render inoperative the manufacturers’ technology and design necessary to reduce vehicle emissions to meet state and federal Clean Air Act standards. |
Brochures
Compatibility
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