Installation Time
(approx) 2 Hours
Difficulty Level:
Simple installation for anyone.
Installation Guides
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Flowmaster American Thunder Dual Dump Cat-Back Exhaust System; Stainless Steel (86-98 Mustang GT, Cobra)
Find parts that fit my vehicle Item 18431
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Aggressive Flowmaster Sound
- Dual Dump Exhaust
- Super 44 Series Mufflers - Black Finish
- Mandrel-Bent Tubing
- 409 Stainless Steel Construction
- Fits 1986-1998 GT and Cobra Mustangs
| Brand | Flowmaster |
| Exhaust System Type | Cat-Back System |
| Exhaust System Material | Stainless Steel |
| Exhaust System Tip Finish | No Tips |
| Exhaust System Tubing Diameter | 2.50 Inch |
| Exhaust Loudness | Moderate |
Description
Flowmaster Sound. The Flowmaster American Thunder Cat-Back Dual Dump exhaust system with its mandrel bent tubing will improve your Mustangs exhaust flow for an increase in power, and the included black Super 44 Series Mufflers will give your Pony a deep throaty muscle car exhaust sound.
Dual Dump Exit. This Flowmaster American Thunder Cat-Back system features a Dual Dump design that exits the exhaust in front of the rear wheels for a stealthy appearance.
Stainless Steel Construction. Constructed from mandrel bent 2.5" diameter 16 gauge stainless steel tubing for it's corrosion resistant properties the Flowmaster American Thunder catback features Super 44 Series chambered mufflers for that classic muscle car sound.
Application. This Flowmaster American Thunder Stainless Steel Cat-Back Dual Dump exhaust system is specifically designed to fit the 1986 to 1998 5.0 LX, GT and SVT Cobra Mustangs.
Dual Dump Exit. This Flowmaster American Thunder Cat-Back system features a Dual Dump design that exits the exhaust in front of the rear wheels for a stealthy appearance.
Stainless Steel Construction. Constructed from mandrel bent 2.5" diameter 16 gauge stainless steel tubing for it's corrosion resistant properties the Flowmaster American Thunder catback features Super 44 Series chambered mufflers for that classic muscle car sound.
Application. This Flowmaster American Thunder Stainless Steel Cat-Back Dual Dump exhaust system is specifically designed to fit the 1986 to 1998 5.0 LX, GT and SVT Cobra Mustangs.
Flowmaster 817574
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Install Details & What's in the Box
Installation Info
What's in the Box
- (1) Muffler, Left
- (1) Muffler, Right
- (2) Turn Downs
- (1) Parts Kit
- (2) 2 1/2†Clamp
- (2) 7/16†Hanger Keepers
Tech Guides:
- What Are the Best Mustang Exhaust Systems for Sound and Performance?
- Which Ford Mustang Axle-Back Exhaust Fits Your Sound Profile?
- What You Need To Upgrade Your Mustang Exhaust System
- What are the Benefits of Aftermarket Exhaust Systems
- Cat-Back vs Axle-Back Exhaust
- Does Upgrading an Exhaust Increase Horsepower?
- Best Mustang Cat-Back Exhaust Systems: Borla vs. Corsa vs. Magnaflow vs. Flowmaster Compared
- What Is Active Exhaust? Benefits, Modes & Upgrade Guide
- How to Improve Your Car's Exhaust Sound
- What is the Best Metal for Aftermarket Exhaust Systems
- Corsa Extreme vs. Borla Atak for Mustang
- Do Exhaust Systems Affect Fuel Efficiency?
- The Best Exhaust Systems for Maximum Horsepower Gains
- Top 5 Loudest Exhaust Systems for Your Mustang
- What are the Performance Benefits of Upgrading to a Cat-Back Exhaust
- 2024 Mustang Exhaust Guide
- Converting Mustang Dual Exhaust
4.8
Customer Reviews (17)
Questions & Answers (10)
Will It Fit My Mustang
- Cobra - 93, 94, 95, 96, 97, 98
- Cobra R - 93, 95
- GT - 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98
- LX - 87, 88, 89, 90, 91, 92, 93
- Other - 86
