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    • Flowmaster Flowmaster American Thunder Cat-back Exhaust System 817116
    • Flowmaster Flowmaster American Thunder Cat-back Exhaust System 817116
    • Flowmaster Flowmaster American Thunder Cat-back Exhaust System 817116
    • Flowmaster Flowmaster American Thunder Cat-back Exhaust System 817116
    • Flowmaster Flowmaster American Thunder Cat-back Exhaust System 817116
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    • American Thunder Cat-Back Exhaust System 1987-1993 Ford Mustang Gt With 5.0L Engine Fits Coupe And Convertible Aggressive Sound Flowmaster
    • American Thunder Cat-Back Exhaust System 1987-1993 Ford Mustang Gt With 5.0L Engine Fits Coupe And Convertible Aggressive Sound Flowmaster
    • American Thunder Cat-Back Exhaust System 1987-1993 Ford Mustang Gt With 5.0L Engine Fits Coupe And Convertible Aggressive Sound Flowmaster
    • American Thunder Cat-Back Exhaust System 1987-1993 Ford Mustang Gt With 5.0L Engine Fits Coupe And Convertible Aggressive Sound Flowmaster
    • American Thunder Cat-Back Exhaust System 1987-1993 Ford Mustang Gt With 5.0L Engine Fits Coupe And Convertible Aggressive Sound Flowmaster
    • American Thunder Cat-Back Exhaust System 1987-1993 Ford Mustang Gt With 5.0L Engine Fits Coupe And Convertible Aggressive Sound Flowmaster
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    Sale!

    Flowmaster Flowmaster American Thunder Cat-back Exhaust System 817116

    Vendor: Flowmaster
    Part Number: 817116
    Save $119
    Sale Price $949.95 Regular Price $1,068.95

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
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    For the person who is looking for a complete cat-back dual exhaust system with an aggressive tone. With an easy fit in mind, these systems feature a mandrel-bent 2.50-inch stainless steel inlet pipes flowing into a pair of Super 44™ Series mufflers for maximum performance and a deep powerful sound. The system utilizes the factory exhaust hangers for a quick and easy installation and the large 2.50-inch mandrel-bent tailpipes exit straight out the back with a turn down at the lower valance. The American Thunder® systems deliver a moderate to aggressive interior and exterior tone and are best suited to the enthusiast who wants their performance to be heard. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these stainless steel systems include all necessary parts, hardware and are covered by our Lifetime Limited Warranty. Note: Fits Coupes and Convertibles. Check out our optional aluminized steel system #17116.


    Flowmaster Flowmaster American Thunder Cat-back Exhaust System 817116


    Specifications:

    Description_ABR SYS 87-93 MU
    Description_SHO SYS 87-93 MUSTANG GT
    Description_INV 87-93 MUSTANG GT 5.0L AMT 409S
    Description_ASC Fits 1987-1993 Ford Mustang GT coupes and convertibles with 5.0L engine.
    Description_DES Flowmaster American Thunder Cat-back Exhaust System
    Description_EXT 1987-1993 Ford Mustang GT with 5.0L engine. Fits coupe and convertible. - Aggressive sound
    Description_MKT For the person who is looking for a complete cat-back dual exhaust system with an aggressive tone. With an easy fit in mind, these systems feature a mandrel-bent 2.50-inch stainless steel inlet pipes flowing into a pair of Super 44™ Series mufflers for maximum performance and a deep powerful sound. The system utilizes the factory exhaust hangers for a quick and easy installation and the large 2.50-inch mandrel-bent tailpipes exit straight out the back with a turn down at the lower valance. The American Thunder® systems deliver a moderate to aggressive interior and exterior tone and are best suited to the enthusiast who wants their performance to be heard. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these stainless steel systems include all necessary parts, hardware and are covered by our Lifetime Limited Warranty. Note: Fits Coupes and Convertibles. Check out our optional aluminized steel system #17116.
    Description_FAB Includes Hangers and Hardware for an Easy Installation
    Description_FAB Mandrel-bent 16-gauge Stainless Steel Tubing
    Description_FAB Dyno tuned for Maximum Performance
    Description_FAB Super 44 Series Performance Mufflers
    Description_FAB Uses the Factory Hanger Locations
    Description_FAB Lifetime Limited Warranty
    Description_FAB Deep Powerful Sound
    Description_ABR SYS 87-93 MU
    Description_SHO SYS 87-93 MUSTANG GT
    Description_INV 87-93 MUSTANG GT 5.0L AMT 409S
    Description_ASC Fits 1987-1993 Ford Mustang GT coupes and convertibles with 5.0L engine.
    Description_DES Flowmaster American Thunder Cat-back Exhaust System
    Description_EXT 1987-1993 Ford Mustang GT with 5.0L engine. Fits coupe and convertible. - Aggressive sound
    Description_MKT For the person who is looking for a complete cat-back dual exhaust system with an aggressive tone. With an easy fit in mind, these systems feature a mandrel-bent 2.50-inch stainless steel inlet pipes flowing into a pair of Super 44™ Series mufflers for maximum performance and a deep powerful sound. The system utilizes the factory exhaust hangers for a quick and easy installation and the large 2.50-inch mandrel-bent tailpipes exit straight out the back with a turn down at the lower valance. The American Thunder® systems deliver a moderate to aggressive interior and exterior tone and are best suited to the enthusiast who wants their performance to be heard. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these stainless steel systems include all necessary parts, hardware and are covered by our Lifetime Limited Warranty. Note: Fits Coupes and Convertibles. Check out our optional aluminized steel system #17116.
    Description_FAB Includes Hangers and Hardware for an Easy Installation
    Description_FAB Mandrel-bent 16-gauge Stainless Steel Tubing
    Description_FAB Dyno tuned for Maximum Performance
    Description_FAB Super 44 Series Performance Mufflers
    Description_FAB Uses the Factory Hanger Locations
    Description_FAB Lifetime Limited Warranty
    Description_FAB Deep Powerful Sound
    Brand Flowmaster
    California Proposition 65 Yes
    California Proposition 65 Chemical Name Nickel (Metallic)
    California Proposition 65 Chemical Name Chromium (hexavalent compounds)
    CARB (California) Compliant Yes
    Catalytic Converter Included No
    2874 0
    Category Exhaust
    3728 Flat Band
    1882 Yes
    Emission Code 5
    Exhaust Series American Thunder
    9881 No
    Exhaust Tip Quantity Sold Separately
    1161 0
    9870 Dual Out Rear
    200 Natural
    353 No
    3390 Performance
    4364 Yes
    Heat Shield Included No
    Inlet Diameter 2.50
    596 Flanged
    9871 2.50
    92 No
    11021 4.00
    11022 13.25
    11023 9.50
    11048 4.00
    11049 13.25
    11050 9.50
    11073 Chambered
    9884 4.00
    1892 13.25
    4372 409 Stainless Steel
    4373 Oval
    9882 Black High-Temperature Paint Finish
    4367 No
    4368 No
    Muffler Included Yes
    9962 Slip-Fit
    4365 2.50
    4366 2.63
    9963 Slip-Fit
    4375 1
    Muffler Part Number Kit Only
    4374 2
    Muffler Series Super 44 Series
    1174 Chambered
    part type Exhaust System
    3530 409 Stainless Steel
    Product Type Exhaust System
    Sound Level Aggressive
    4377 No
    Sub Category Exhaust and Tail Pipes
    4369 2.50
    4376 2
    Tail Pipe Quantity Dual
    4370 No
    26 Cat-Back
    6014 No
    2126 Not Applicable
    Warning California Proposition 65
    Pipe Color Silver
    Drive 2WD
    9885 9.50
    Brand Flowmaster
    California Proposition 65 Yes
    California Proposition 65 Chemical Name Nickel (Metallic)
    California Proposition 65 Chemical Name Chromium (hexavalent compounds)
    CARB (California) Compliant Yes
    Catalytic Converter Included No
    2874 0
    Category Exhaust
    3728 Flat Band
    1882 Yes
    Emission Code 5
    Exhaust Series American Thunder
    9881 No
    Exhaust Tip Quantity Sold Separately
    1161 0
    9870 Dual Out Rear
    200 Natural
    353 No
    3390 Performance
    4364 Yes
    Heat Shield Included No
    Inlet Diameter 2.50
    596 Flanged
    9871 2.50
    92 No
    11021 4.00
    11022 13.25
    11023 9.50
    11048 4.00
    11049 13.25
    11050 9.50
    11073 Chambered
    9884 4.00
    1892 13.25
    4372 409 Stainless Steel
    4373 Oval
    9882 Black High-Temperature Paint Finish
    4367 No
    4368 No
    Muffler Included Yes
    9962 Slip-Fit
    4365 2.50
    4366 2.63
    9963 Slip-Fit
    4375 1
    Muffler Part Number Kit Only
    4374 2
    Muffler Series Super 44 Series
    1174 Chambered
    part type Exhaust System
    3530 409 Stainless Steel
    Product Type Exhaust System
    Sound Level Aggressive
    4377 No
    Sub Category Exhaust and Tail Pipes
    4369 2.50
    4376 2
    Tail Pipe Quantity Dual
    4370 No
    26 Cat-Back
    6014 No
    2126 Not Applicable
    Warning California Proposition 65
    Pipe Color Silver
    Drive 2WD
    9885 9.50


    This Part Fits:

    Year Make Model Submodel Notes
    1987 Ford Mustang GT
    1988 Ford Mustang GT
    1989 Ford Mustang GT
    1990 Ford Mustang GT
    1991 Ford Mustang GT
    1992 Ford Mustang GT
    1993 Ford Mustang GT
    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy

    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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