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15-17 Ford Mustang GT 5.0L V8 Flowmaster 817730 American Thunder Cat-back Exhaust System

The Flowmaster American Thunder Cat-back Exhaust System delivers aggressive Mustang GT sound with improved exhaust flow and classic Flowmaster performance styling. Designed for 2015-2017 Ford Mustang GT 5.0L V8 coupes, this system features 3.00-inch stainless steel tubing, 60 Series mufflers, an X-pipe design, and polished exhaust tips for a premium performance upgrade.

Top Features

  • Fits 2015-2017 Ford Mustang GT 5.0L V8 Coupe models
  • American Thunder Series cat-back exhaust system with aggressive exterior sound and moderate interior tone
  • Dual 3.00-inch Scavenger Series X-pipe assembly for enhanced exhaust flow and performance sound
  • 60 Series chambered performance mufflers for a deep, powerful Flowmaster exhaust note
  • 3.00-inch mandrel-bent stainless steel tubing for durability and smooth airflow
  • Large 4.00-inch polished 304 stainless steel exhaust tips with embossed Flowmaster logo
  • Uses factory hanger locations for a straightforward bolt-on installation
  • Includes clamps and hangers for easier installation
  • Backed by Flowmaster Lifetime Limited Warranty
  • CARB compliant and emissions legal

Vehicle Fitment

  • 2015 Ford Mustang GT Coupe - 5.0L V8
  • 2016 Ford Mustang GT Coupe - 5.0L V8
  • 2017 Ford Mustang GT Coupe - 5.0L V8
  • Does not fit convertible models
Vendor: Flowmaster
SKU: FLO817730
Availability: 1 In Stock
$ 1,549.95 USD
On-Sale $ 1,549.95 USD
Normally $ 1,549.95 USD
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UPC: 700042031955
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Proposition65 Warning: Cancer and Reproductive Harm

Flowmaster American Thunder Cat-back Exhaust System

Part Number: 817730

The Flowmaster American Thunder Cat-back Exhaust System delivers the legendary Flowmaster muscle car sound for 2015-2017 Ford Mustang GT 5.0L V8 coupe models. Designed for enthusiasts who want an aggressive exterior exhaust note while maintaining a moderate interior sound level, this performance exhaust system improves the driving experience with a deep, powerful tone and dyno-tuned airflow characteristics. The system features a dual 3.00-inch Scavenger Series X-pipe assembly, specially tuned 60 Series chambered mufflers, and mandrel-bent stainless steel tubing to support performance while providing the unmistakable Flowmaster sound. Built for a straightforward bolt-on installation, the system uses factory hanger locations and includes the necessary components for a clean upgrade from the factory exhaust.

Key Features

  • Designed specifically for 2015-2017 Ford Mustang GT 5.0L V8 coupe models
  • American Thunder Series cat-back exhaust design for an aggressive exterior tone with a moderate interior sound level
  • Dual 3.00-inch Scavenger Series X-pipe assembly designed for enhanced exhaust flow and a unique deep tone
  • Specially engineered Flowmaster 60 Series chambered performance mufflers
  • 3.00-inch mandrel-bent stainless steel tubing for smooth exhaust flow and durability
  • Large 4.00-inch polished 304 stainless steel exhaust tips with embossed Flowmaster logo styling
  • Dyno tuned for performance-focused exhaust characteristics
  • Uses factory hanger locations for easier installation
  • Emissions-legal design

Benefits

  • Provides the classic Flowmaster exhaust sound that enhances the character of the Mustang GT 5.0L V8 engine
  • Improves exhaust flow potential compared to restrictive factory components
  • Creates a more aggressive appearance with large polished stainless steel exhaust tips
  • Offers durable stainless steel construction designed for long-lasting performance
  • Allows enthusiasts to achieve a premium aftermarket exhaust upgrade with a bolt-on design
  • Backed by Flowmaster's Lifetime Limited Warranty for added confidence and product protection

Product Specifications

  • Brand: Flowmaster
  • Part Number: 817730
  • Product Type: Cat-back Exhaust System
  • Exhaust Series: American Thunder
  • Vehicle Drive Type: 2WD
  • Engine Compatibility: 5.0L V8
  • Sound Level: Aggressive exterior sound / Moderate interior sound
  • Main Pipe Diameter: 3.00 inches
  • Inlet Diameter: 3.00 inches
  • Tail Pipe Diameter: 3.00 inches
  • Exhaust Tip Diameter: 4.00 inches
  • Exhaust Tip Quantity: 2
  • Exhaust Tip Material: 304 Stainless Steel
  • Exhaust Tip Finish: Polished
  • Exhaust Tip Color: Silver
  • Exhaust Tip Style: Round, angle cut, double wall
  • Pipe Material: 409 Stainless Steel
  • Muffler Material: 409 Stainless Steel
  • Muffler Type: 60 Series Chambered Performance Mufflers
  • Muffler Quantity: 2
  • Muffler Finish: Black High-Temperature Paint
  • Exit Style: Dual Rear Exit
  • Catalytic Converter Included: No
  • Valve Included: No
  • Clamps Included: Yes
  • Hangers Included: Yes
  • California Proposition 65 Warning: Yes

Install Difficulty level

This Flowmaster American Thunder Cat-back Exhaust System is designed for an easy bolt-on installation using factory hanger locations and included hardware. Installation can typically be completed in approximately 2 hours with basic mechanical tools and light to moderate mechanical skill, making it a manageable upgrade for experienced DIY enthusiasts.

Vehicle Fitment

  • 2015-2017 Ford Mustang GT Coupe
  • Engine: 5.0L V8
  • Body Style: Coupe/Fastback only
  • Note: This system does not fit Mustang convertible models

For questions about this product or to report product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.

Shipping Policy

MPT is proud to offer free shipping on most orders over $149.

  • Free shipping applies only to the contiguous United States. Shipping and handling charges will apply to orders outside the contiguous US, and the buyer is responsible for any duty fees or taxes their home country may charge to import goods.
  • With free shipping, we will choose the best shipping method for your order. We use all major carriers, including USPS, FedEx, UPS, and DHL.

Turnaround Times:

  • MPT Tunes have a standard turnaround time of 2-3 business days, beginning once we receive your MPT Tune Form.
  • We do not process orders on weekends or observed holidays, which do not count as business days.
  • Physical items that are in stock at MPT and ordered by 4PM EST will be shipped the same day. Orders placed after 4PM EST will be processed on the following business day.

Special Considerations:

  • Items not stocked at our location will follow the same processing times but may experience lead-time delays and could incur additional charges. Shipping methods may vary for these items based on what was paid and the requested delivery speed. If you need an item by a specific deadline, please contact an MPT Expert.
  • SCT Tuner Orders with the Prioritized Order option must have their tune forms submitted by 3PM EST to be completed the same day. Forms submitted after this time will be processed the next business day.
  • Orders will ship to the billing address listed on your order. If paying by credit or debit card, we can only ship to the billing address. Contact an MPT Expert for assistance if you need a different shipping address.

MPT Performance Returns and Refund Policy

A Return Authorization Number is required for all returns. Please contact an MPT Expert to obtain an RA # before sending anything back to us for any reason.

MPT tuning charges and license fees are Non-Refundable. The sale is final when MPT has sent the tune file over email. This includes both new tune purchases and tune updates.

Products other than MPT tunes, digital products, and MPT decals may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed it is non-refundable. We reserve the right to deny the return, should the product be received and it display signs of installation or unmentioned damage.

For vehicle programmers/tuners, the vehicle must be returned to stock if a program was installed. If a tuning device is returned and has not been returned to stock, a refund will not be issued, and your tuner will not be sent back without a shipping and handling fee.

The customer is responsible for all shipping charges incurred during the return process.

Amount Refunded:
•Returns post marked before 30 days from the date the item was received will be refunded the purchase price, minus a 25% restocking fee and the cost of shipping.
After 30 days, all sales are Final.
•Shipping charges along with any package insurance are non-refundable. If your purchase was shipped with our Free Shipping option, the cost of the shipping will be subtracted from the total refund amount.

HP Tuners Credits are assigned to the HP Tuners product with the submitted serial number and cannot be transferred. Once you load a tune to your vehicle with the RTD, these credits are Non-Refundable.

Digital products and files that have no ability to be taken back physically, such as an SCT Tuner Unlock, are Non-Refundable.

nGauge Tune License Fee is included in your initial purchase of MPT tunes for the nGauge. This fee is factored into the price of the tunes and becomes Non-Refundable when the stock file has been emailed to MPT.

MPT Decals are Non-Refundable, once they have been received by the customer.

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