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18-23 Ford Mustang GT 5.0L V8 Flowmaster 817806 Outlaw Axle-back Exhaust System

The Flowmaster Outlaw Axle-Back Exhaust System delivers an aggressive race-inspired exhaust tone for 2018-2023 Ford Mustang GT 5.0L models without factory Active Performance Exhaust Valves. Featuring stainless steel construction, quad black ceramic coated tips, and a direct-fit design, this premium exhaust offers lasting durability, bold styling, and simple bolt-on installation.

Top Features

  • Flowmaster Outlaw Series race-proven mufflers
  • Aggressive exterior and noticeable interior exhaust sound
  • 3.00-inch mandrel-bent 409 stainless steel tubing
  • Quad 4.00-inch black ceramic coated 304 stainless steel tips
  • Retains factory resonator mid-pipe
  • Direct-fit installation using factory hanger locations
  • Includes clamps, hardware, and installation instructions
  • Backed by a Flowmaster Lifetime Limited Warranty

Vehicle Fitment

  • 2018-2023 Ford Mustang GT Coupe 5.0L V8 (Without Factory Active Performance Exhaust Valves)
  • 2018-2023 Ford Mustang GT Convertible 5.0L V8 (Without Factory Active Performance Exhaust Valves)
Vendor: Flowmaster
SKU: FLO817806
Availability: 3 In Stock
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UPC: 700042037612
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Description

Flowmaster Outlaw Axle-Back Exhaust System – Part #817806

The Flowmaster Outlaw Axle-Back Exhaust System is engineered for 2018-2023 Ford Mustang GT 5.0L coupes and convertibles equipped without the factory Active Performance Exhaust Valves. Designed for Mustang enthusiasts seeking an unmistakable muscle car sound, this premium performance exhaust delivers an aggressive exhaust tone both inside and outside the vehicle while maintaining excellent fit and finish. Featuring race-proven Outlaw Series mufflers, mandrel-bent 3.00-inch 409 stainless steel tubing, and bold quad 4.00-inch black ceramic coated exhaust tips, this system enhances the appearance, sound, and driving experience without replacing the factory resonator mid-pipe. Precision engineered to utilize the factory hanger locations, the system includes all required hardware and installation instructions, making it an excellent upgrade for drivers looking to achieve a more aggressive exhaust note with a straightforward installation.

Key Features

  • Designed specifically for 2018-2023 Ford Mustang GT 5.0L Coupes and Convertibles without factory Active Performance Exhaust Valves.
  • Race-proven Flowmaster Outlaw Series mufflers deliver an aggressive performance exhaust sound.
  • Dyno-tuned to maximize exhaust flow and performance.
  • Mandrel-bent 3.00-inch 409 stainless steel tubing for improved durability and unrestricted exhaust flow.
  • Retains the factory resonator mid-pipe.
  • Quad 4.00-inch angle-cut, double-wall black ceramic coated 304 stainless steel exhaust tips.
  • Slip-fit inlet connections with included flat band clamps.
  • Utilizes factory hanger locations for a direct-fit installation.
  • Complete kit includes mufflers, clamps, hardware, and installation instructions.
  • Premium stainless steel construction for long-lasting corrosion resistance.

Benefits

  • Produces an aggressive, deep muscle car exhaust tone that complements the Mustang GT's 5.0L V8.
  • Improves vehicle appearance with large black ceramic coated quad exhaust tips.
  • Maintains excellent fit with a direct bolt-on axle-back design.
  • High-quality stainless steel construction helps withstand heat and corrosion for years of dependable performance.
  • No tuning required after installation.
  • Designed to work seamlessly with the factory exhaust system while retaining the original resonator.
  • Backed by Flowmaster's Lifetime Limited Warranty for long-term confidence and peace of mind.

Product Specifications

  • Part Number: 817806
  • Product Type: Axle-Back Exhaust System
  • Exhaust Series: Outlaw
  • Sound Level: Aggressive
  • Main Pipe Diameter: 3.00 inches
  • Pipe Material: 409 Stainless Steel
  • Pipe Color: Silver
  • Muffler Quantity: 2
  • Muffler Series: Outlaw
  • Muffler Type: Reflection
  • Muffler Material: 409 Stainless Steel
  • Muffler Finish: Black High-Temperature Paint
  • Exit Style: Dual Rear Exit
  • Tailpipe Quantity: Dual
  • Exhaust Tip Quantity: 4
  • Exhaust Tip Diameter: 4.00 inches
  • Exhaust Tip Length: 5.25 inches
  • Exhaust Tip Material: 304 Stainless Steel
  • Exhaust Tip Finish: Black Ceramic Coating
  • Exhaust Tip Shape: Round
  • Exhaust Tip Style: Angle Cut, Double Wall
  • Exhaust Tip Logo: Embossed
  • Clamps Included: Yes
  • Hangers Included: Yes
  • Mounting Style: Uses Factory Hanger Locations
  • Inlet Connection: Slip-Fit Clamp-On
  • Catalytic Converters Included: No
  • Finish: Natural
  • UPC: 700042037612

Install Difficulty Level

Easy. This direct-fit axle-back exhaust system is designed to install using the factory hanger locations and included hardware. No welding is required under normal installation conditions. Installation can typically be completed in as little as 1 hour using common hand tools, making it an excellent weekend upgrade for most DIY enthusiasts.

Vehicle Fitment

  • 2018 Ford Mustang GT 5.0L V8 Coupe (Without Factory Active Performance Exhaust Valves)
  • 2018 Ford Mustang GT 5.0L V8 Convertible (Without Factory Active Performance Exhaust Valves)
  • 2019 Ford Mustang GT 5.0L V8 Coupe (Without Factory Active Performance Exhaust Valves)
  • 2019 Ford Mustang GT 5.0L V8 Convertible (Without Factory Active Performance Exhaust Valves)
  • 2020 Ford Mustang GT 5.0L V8 Coupe (Without Factory Active Performance Exhaust Valves)
  • 2020 Ford Mustang GT 5.0L V8 Convertible (Without Factory Active Performance Exhaust Valves)
  • 2021 Ford Mustang GT 5.0L V8 Coupe (Without Factory Active Performance Exhaust Valves)
  • 2021 Ford Mustang GT 5.0L V8 Convertible (Without Factory Active Performance Exhaust Valves)
  • 2022 Ford Mustang GT 5.0L V8 Coupe (Without Factory Active Performance Exhaust Valves)
  • 2022 Ford Mustang GT 5.0L V8 Convertible (Without Factory Active Performance Exhaust Valves)
  • 2023 Ford Mustang GT 5.0L V8 Coupe (Without Factory Active Performance Exhaust Valves)
  • 2023 Ford Mustang GT 5.0L V8 Convertible (Without Factory Active Performance Exhaust Valves)

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

Shipping & Returns

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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