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Item #:
171579477
Flowmaster 717999 FlowFX Cat-Back Exhaust System - 3 Inch Dual Rear Exit- 409SS
Item #:
171579477
XCD 4919
Price Details
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Order now and get it around Thursday, October 08
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Max dyno gains of 20 hp and 25 lb-ft of torque at the wheels with aggressive yet refined exhaust note.
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What Stands Out
Enhanced Sound
The FlowFX exhaust system delivers a deep, aggressive exhaust tone that elevates your vehicle's audio experience, making it stand out on the road and enhancing overall driving enjoyment.
Premium Material
Constructed from high-grade 409 stainless steel, this exhaust system ensures durability and resistance to rust, providing long-lasting performance under various environmental conditions and extending the life of your investment.
Easy Installation
Designed for a straightforward installation process, the FlowFX Cat-Back system allows for quick fitting with minimal tools required, making it accessible for DIY enthusiasts and saving on professional installation costs.
Product Details
| Brand | Flowmaster |
| Manufacturer part number | 717999 |
| Inlet diameter | 3 in |
| Outlet diameter | 3.50 in |
| Muffler type | Performance Mufflers |
| Material | 409 Stainless Steel |
| Finish | Natural |
| Vehicle fitment type | Specific |
| Product name | Flowmaster 717999 FlowFX Cat-Back Exhaust System - 3 Inch Dual Rear Exit- 409SS (1823717.5 x 7.6 x 1038.9 cm) |
| Compatible cars | 2020-2023 Ford Explorer ST and Lincoln Aviator 3.0-Liter Twin Turbo EcoBoost Engine |
| Items included | installation instructions and all necessary hardware |
| Vehicle make | Ford |
| Vehicle model | Explorer ST |
| Vehicle year | 2020, 2021, 2022, 2023, 2024 |
| Weight | 81.9 lb (37.15 kg) |
| Model | 717999 |
| Has written warranty | No |
Who Should Buy?
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Performance Enthusiasts
Improvements in horsepower and torque make this exhaust system suitable for those seeking enhanced vehicle performance.
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Sound Aficionados
Ideal for users wanting a deeper, aggressive sound from their vehicle, giving it a more robust presence on the road.
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Durability Seekers
Constructed from 409SS stainless steel, it offers long-lasting durability, making it perfect for users looking for longevity.
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Budget Shoppers
Priced higher than standard exhaust systems, it may not fit those looking for a low-cost upgrade.
Product Description
Flowmaster 717999 FlowFX Cat-Back Exhaust System - 3 Inch Dual Rear Exit- 409SS
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Customer Questions & Answers
-
Question:
Is this exhaust system compatible with my vehicle?
Answer: Yes, it is compatible with 2020-2024 Ford® Explorer ST and Lincoln Aviator with the 3.0-Liter Twin Turbo EcoBoost® Engine. -
Question:
Does this exhaust system come with a warranty?
Answer: Yes, it comes with Flowmaster’s Lifetime Limited Warranty. -
Question:
How difficult is the installation process?
Answer: The installation is designed to be easy and utilizes all original hanger locations, making it suitable for home installation.
Flowmaster Cat-Back Exhaust Systems Editorial Review
Flowmaster 717999 FlowFX Cat-Back Exhaust System - 3 Inch Dual Rear Exit- 409SS is a high-performance exhaust designed specifically for the 2020-2023 Ford Explorer ST and Lincoln Aviator with a 3.0-Liter Twin Turbo EcoBoost Engine. This exhaust system features a durable 409 stainless steel construction, ensuring both longevity and performance enhancement. Users have noted a noticeable improvement in sound and power, making it a favorite among enthusiasts looking for that aggressive tone. Installation includes all necessary hardware, making it a straightforward upgrade for your vehicle.
Customer Reviews & Ratings
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Pros
- Performance mufflers enhance engine sound
- Durable 409 stainless steel construction
- 3 inch inlet for optimal performance
- Specific fit for select Ford models
- Includes installation instructions and hardware
Cons
- Installation might require some professional assistance
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
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Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
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Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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XCD 4919
Order now and get it around Thursday, October 08
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Features & Benefits
- Dual inlet/outlet Flow FX muffler with built-in X-pipe for improved performance.
- Max gains of 20 hp and 25 lb-ft of torque at the wheels.
- Constructed with durable 409 stainless steel for enhanced longevity.
- Mandrel bent 3.00-inch tubing ensures optimal flow and power.
- Easy installation with factory fitment using original hanger locations.
- Includes Flowmaster’s Lifetime Limited Warranty for peace of mind.
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