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05-10 Ford Mustang GT 4.6L V8 Flowmaster 817494 American Thunder Cat-back Exhaust System

The Flowmaster American Thunder Cat-back Exhaust System 817494 delivers aggressive muscle car sound, improved exhaust flow, and enhanced performance for the 2005-2010 Ford Mustang. Featuring 3.00-inch mandrel-bent tubing, a Scavenger Series X-pipe, and 60 Series Delta Flow mufflers, this system provides a premium performance upgrade with durable stainless steel construction and a bold dual exhaust appearance.

Top Features

  • Complete cat-back dual exhaust system engineered for performance-focused Mustang enthusiasts.
  • 3.00-inch mandrel-bent 16-gauge 409 stainless steel tubing for improved exhaust flow.
  • Scavenger Series X-pipe crossover helps improve exhaust pulse velocity and torque response.
  • 60 Series Delta Flow chambered mufflers deliver an aggressive exterior exhaust tone.
  • 4.00-inch polished 304 stainless steel exhaust tips provide a high-performance appearance.
  • Designed for easy installation using factory hanger locations and included hardware.
  • Connects after factory catalytic converters for a straightforward exhaust upgrade.
  • Backed by Flowmaster warranty coverage for long-term reliability and confidence.

Vehicle Fitment

  • 2005-2010 Ford Mustang GT - 4.6L V8 engine
  • 2005-2010 Ford Mustang GT500 - 5.4L V8 engine
  • 2005-2010 Ford Mustang California Special - 4.6L V8 engine
Vendor: Flowmaster
SKU: FLO817494
Availability: 2 In Stock
$ 1,449.95 USD
On-Sale $ 1,449.95 USD
Normally $ 1,449.95 USD
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UPC: 700042024094
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Flowmaster American Thunder Cat-back Exhaust System

Part Number: 817494

The Flowmaster American Thunder Cat-back Exhaust System 817494 is designed for enthusiasts who want to transform the sound, appearance, and performance character of their 2005-2010 Ford Mustang GT, GT500, California Special, or convertible. Featuring a 3.00-inch mandrel-bent exhaust design, Scavenger Series X-pipe crossover, and specially engineered 60 Series Delta Flow chambered mufflers, this complete dual exhaust system delivers an aggressive exterior exhaust tone while maintaining a moderate interior sound level for street driving. The system is engineered to improve exhaust flow, throttle response, and overall driving excitement while preserving the classic muscle car sound Mustang owners expect.

Key Features

  • Complete American Thunder cat-back dual exhaust system designed for high-performance Mustang applications.
  • 3.00-inch mandrel-bent 16-gauge 409 stainless steel tubing for improved exhaust flow and durability.
  • Scavenger Series X-pipe crossover helps maximize exhaust pulse velocity and supports improved torque characteristics.
  • 60 Series Delta Flow chambered mufflers provide an aggressive exterior sound with a refined interior tone.
  • Large 4.00-inch polished 304 stainless steel exhaust tips provide a premium performance appearance.
  • Connects after the factory catalytic converter and uses factory hanger locations for easier installation.
  • Includes hangers, clamps, and required hardware for a straightforward bolt-on installation.
  • Designed for enthusiasts seeking increased performance, improved exhaust presence, and signature Flowmaster sound.

Benefits

  • Enhances the Mustang driving experience with a deep, aggressive exhaust note that stands out from stock exhaust systems.
  • Helps improve exhaust efficiency, throttle response, and performance potential with less restrictive exhaust routing.
  • Provides a balanced combination of street-friendly manners and performance-oriented sound.
  • Delivers long-lasting durability through stainless steel construction and quality Flowmaster engineering.
  • Backed by Flowmaster warranty coverage for added purchase confidence.

Product Specifications

  • Brand: Flowmaster
  • Part Number: 817494
  • Product Type: Cat-back Exhaust System
  • Exhaust Series: American Thunder
  • Vehicle Drive Type: 2WD
  • Material: 409 Stainless Steel Exhaust Tubing
  • Exhaust Tip Material: 304 Stainless Steel
  • Finish: Natural Stainless Steel Tubing with Polished Exhaust Tips
  • Exhaust Tip Diameter: 4.00 inches
  • Exhaust Tip Quantity: 2
  • Exhaust Exit Style: Dual Rear Exit
  • Main Piping Diameter: 3.00 inches
  • Inlet Diameter: 2.50 inches
  • Muffler Quantity: 2
  • Muffler Series: 60 Series Delta Flow
  • Muffler Type: Chambered
  • Muffler Body Material: 409 Stainless Steel
  • Muffler Finish: Black High-Temperature Paint Finish
  • Sound Level: Aggressive
  • Catalytic Converter Included: No
  • Clamp Type: Flat Band Clamps
  • Emission Code: 5
  • UPC: 700042024094

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 installation hardware. Installation can typically be completed in approximately 2 hours with basic mechanical skills and proper vehicle support equipment.

Vehicle Fitment

  • 2005-2010 Ford Mustang GT with 4.6L V8 engine
  • 2005-2010 Ford Mustang GT500 with 5.4L V8 engine
  • 2005-2010 Ford Mustang California Special with 4.6L V8 engine

For product questions 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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