Will this X pipe fit my stock exhaust headers?

Yes, this BBK X pipe is designed to install directly to factory shorty exhaust headers or any aftermarket shorty exhaust system. It maintains factory O2 sensor placement for a straightforward installation.

What material is the tubing made from?

The tubing is made from 16-gauge aluminized steel. This material is chosen for its durability and resistance to corrosion, especially when combined with the mandrel-bent construction.

Is this X pipe legal in all states?

This BBK X pipe is not legal for use in California and may not be legal in other states with strict emissions requirements. Please check your local emission laws and requirements before purchasing.

BBK 99-04 Mustang 4.6 GT / Cobra High Flow X Pipe With Catalytic Converters - 2-1/2

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Specifications

Brand: BBK
Part #: 1670
UPC: 197975016706

BBK 99-04 Mustang 4.6 GT / Cobra High Flow X Pipe With Catalytic Converters - 2-1/2

Name: BBK 99-04 Mustang 4.6 GT / Cobra High Flow X Pipe With Catalytic Converters - 2-1/2
Brand: BBK
Price: 734.71 USD
Availability: InStock

$734.71

Fits 1999-2004 Ford Mustang GT/Cobra. This BBK X pipe features high-flow catalytic converters and 2-1/2" mandrel-bent tubing to improve exhaust flow and performance.

Key Features

Fits 1999-2004 Ford Mustang GT and Cobra.
Features high-flow catalytic converters to maximize exhaust flow.
Constructed from 16-gauge aluminized steel tubing.
2-1/2 inch diameter tubing is CNC mandrel bent for improved exhaust extraction.
Unique BBK center X section enhances exhaust flow efficiency.
Designed as a direct replacement for the factory X pipe.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits this vehicle

Ford Mustang 1999-2004

Product Details

If you're looking to get more out of your 1999-2004 Mustang GT or Cobra, this BBK High Flow X Pipe is a solid choice. It's designed to replace the restrictive factory pipe, helping your 4.6L engine breathe easier. This means you'll see an improvement in both horsepower and torque, giving you that extra kick when you hit the gas.

BBK builds these X pipes using 16-gauge aluminized steel tubing that's CNC mandrel bent to a 2-1/2 inch diameter. This larger diameter, combined with the unique BBK center X section, helps exhaust gases exit more efficiently. It also includes high-flow catalytic converters that are designed to increase exhaust flow without sacrificing emissions compliance in most areas. The O2 sensor locations are kept in the factory spots, making installation pretty straightforward, whether you're connecting to stock shorty headers or an aftermarket set.

This X pipe is made in the USA and is a direct replacement for your stock unit. While it's designed to bolt right up, please be aware that it is not legal for sale or use in California due to emissions regulations. If you're aiming for a deeper V8 rumble and a noticeable bump in performance, this BBK X pipe is a popular way to go.