MagnaFlow Mustang GT Street Series Cat-Back Exhaust (1999-2004)

$441.81 (37%)
The MagnaFlow 15671 Street Series cat-back exhaust gives your Mustang a deep rumble and growl that will stand out from other exhaust systems. The Street system still delivers that powerful sound you want in a performance exhaust but it will not wake your neighbors.
Part Number: 263 15671
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This Street Series exhaust system gives your Mustang a powerful sound without announcing your presence to people a block away. This is the perfect cat-back for the enthusiast that daily drives their Mustang and wants an exhaust that won't overpower the radio or conversation, but will get rowdy when they put the pedal down. 

Mean sound. The street mufflers give the exhaust a deep rumble at idle that let people know your Mustang has a powerful V8. A growling acceleration announces that your Mustang is not stock, and lets you stand out. Special acoustic fibers refine and tune the sound.

Better flow. Remove the restriction in the exhaust with this cat-back and make sure that your Mustang is making the most power possible. The MagnaFlow system uses a straight-through design that will not hold your Mustang back. The mufflers use a perforated tube to allow exhaust to flow.

Quality construction. Made in the USA from premium T409 stainless steel, the MagnaFlow system offers great durability. The dual polished T304 stainless steel tips look great and will not develop any rust. 

Features & Benefits: 

  • Polished 3.5" T304 stainless tips
  • 2.5" T409 mandrel-bent tubing
  • Deep and mean exhaust note
  • Straight-through design
  • Better performance
  • Comfortable cruising
About MagnaFlow: Exhaust systems from MagnaFlow are designed to deliver great quality, impressive performance, and a mean sound. Systems are tested with industry-leading technology to ensure that these goals are met. With 35+ years of experience in the exhaust industry, MagnaFlow can take your Mustang to the next level.

CA Residents: Cancer and Reproductive Harm WARNING

Fitment & Features


Manufacturer: MagnaFlow

Installation Information:

Level of Difficulty: Easy
Install Time: About 1 1/2 Hours
Tools Required: Basic Shop Tools

Vehicle Fitment:

Fits Trim Levels: GT, Bullitt, Mach 1
Fits Model Year:
1999, 2000, 2001, 2002, 2003, 2004
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