Skip to product information
1 of 3

2018-2020 Ford Mustang GT Scavenger X-Pipe Kit Flowmaster 81781

2018-2020 Ford Mustang GT Scavenger X-Pipe Kit Flowmaster 81781

SKU: 817817
Regular price $344.95 USD
Regular price Sale price $344.95 USD
Sale Sold out

The Flowmaster Scavenger Series X-pipe system for 2018-2020 Ford Mustang GT with 5.0L engine is a great way to increase maximum power and give a deep unique sound to your Pony. The Scavenger Series X-pipe is not for the faint of heart, since this system deletes the factory resonators and will increase both the interior and exterior sound levels. This system can be used with either the factory rear mufflers, or with our Flowmaster axle-back exhaust systems. The pipe kits are constructed with 2.50-inch 409S mandrel-bent tubing, includes all necessary hardware and is covered by our Lifetime Limited Warranty. Note: Fits coupes and convertibles.


  • Compatible with Factory Mufflers or Flowmaster Axle-back Systems
  • Includes Clamps, Hardware and Adapter Pipes
  • Mandrel-bent 2.50-inch Stainless Steel Tubing
  • Dyno Tuned For Maximum Performance
  • Maximum Power and Increases Sound
  • Over 35 Years of Flowmaster Quality
  • Includes all Necessary Hardware
  • Deletes The Factory Resonator
  • Straight Forward Installation


  • Fits 2018-2020 Mustang GT with 5.0L engine. Fits both Coupes and Convertibles.
Brand Flowmaster
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
California Proposition 65 Chemical Name Nickel (Metallic)
California Proposition 65 Required Yes
Catalytic Converter Included No
Emission Code 5
Heat Shield No
Mount Type Uses Factory Hangers
Muffler Quantity None
Product Type Exhaust Accessories
Single Dual Dual
System Type Exhaust Accessory
Tip Quantity Not Included
Tip Style Not Included
Tubing Diameter (in) 2.5
Tubing Material 409S Stainless Steel
Warning California Proposition 65
View full details

Policies and FAQs

Return Policy

We offer 30 days return of 100% purchase price for defective items. Return shipping and handling charges are the customers responsibility unless it is our mistake. (If shipping was included it will be deducted from the return)  If the part is wrong or defective please advise us if you would like an exchange, replacement or refund. We suggest our buyers keep tracking number delivery confirmation, and pack item securely to protect the return. If the part is lost we are unable to offer a refund. The part(s) must be returned in its original condition. Returns over 30 days may be accepted at a discounted price & offered store credit. Our return address is 774 Broad St Wadsworth, Oh 44281.


This is the line that runs from the front of the vehicle to the rear. On most vehicles it connects to a junction then you will have rear axle lines. On a few cars the intermediate lines will connect to the rear wheels. It is recommended to change the axle lines if you are replacing the intermediate lines.

Our kits include all of the solid metal lines for that section of the vehicle.

We are happy to help! Please help us to help you by going to our return form and filling out the form as best as you can in order to request a return.

  • Modern Day stands by our parts and is happy to accept returns within 30 days of purchase. Parts must be in new condition.
  • If a part arrives damaged, or is defective, Please report it to us immediately. So we can handle it for your promptly.

Yes but you will need to order in advance. All of our items are not stocked at our location. So please place your order online and we will notify you when it is ready for pick up.

Unfortunately we cannot offer single lines outside of kits

Yes, all are covered by the manufacturer's standard warranty. Most warranties cover the cost of parts. Any installation or other fees are non-refundable.

Online we accept PayPal and all major Credit Cards. If your are picking an item up we gladly accept cash.

We can only ship to your confirmed address in PayPal or your billing address if you pay with a credit card.

Orders typically Arrive within 3 to 10 days depending if it is a stocked item or something we have manufactured at time of sale.

Yes please send us a message through our custom orders page.

Yes, but items sent out of the continental U.S. may incur additional charges based on their destination

The left and right sides on a vehicle are determined as though you were sitting in the driver's seat. The left is the driver's side, and the right is the passenger's side.

Check it again tomorrow. It takes up to 1 day for the carrier to give status and a delivery date. UPS and FedEx provide delivery dates, USPS usually does not but they take no longer than 5 business days.

Yes! Thank you for your military service!

Still have a question or concern?  Please contact use our contact us form!

Yes! Thank you for your military service!

Warranty Information

Customer service is our top priority and because we value your time and energy we ask you to visit our Contact Us page and reach out so that we may assist you in finding the correct warranty for your product. Please include your name, the name on the order, the order number, and the SKU of the product to ensure the quickest and most accurate response to your inquiry.

Product Notices

*NOTE: Product images may not reflect actual product appeareance.