{"product_id":"flowmaster-18-23-mustang-5-0l-outlaw-axle-back-exhaust-system-no-valves-1","title":"18-23 Ford Musang GT 5.0L V8 Flowmaster 817821 Outlaw Axle-back Exhaust System","description":"\u003ch2\u003e\u003cstrong\u003eFlowmaster Outlaw Axle-Back Exhaust System | Part #817821\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTransform the sound and appearance of the 2018-2023 Ford Mustang GT 5.0L with the Flowmaster Outlaw Axle-Back Exhaust System, Part #817821. Engineered specifically for Mustang GT coupes and convertibles without the factory Active Performance Exhaust Valves, this premium performance exhaust delivers the unmistakable aggressive tone that Flowmaster's race-proven Outlaw mufflers are known for. Constructed from durable 409 stainless steel with mandrel-bent 3.00-inch tubing, this direct-fit axle-back system improves exhaust flow while maintaining excellent durability for years of performance driving. The quad 4.00-inch polished 304 stainless steel exhaust tips provide an eye-catching factory-style appearance that perfectly complements the Mustang's aggressive styling. Designed as a bolt-on upgrade that utilizes the factory hanger locations, this system includes all necessary hardware and installation instructions, making it an excellent choice for enthusiasts seeking enhanced sound, premium quality, and long-lasting performance.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFlowmaster Outlaw Axle-Back Exhaust System\u003c\/li\u003e\n\u003cli\u003eFits 2018-2023 Ford Mustang GT 5.0L Coupes and Convertibles without Factory Active Performance Exhaust Valves\u003c\/li\u003e\n\u003cli\u003eRace-proven Outlaw reflection-style mufflers deliver an aggressive exhaust note\u003c\/li\u003e\n\u003cli\u003eMandrel-bent 3.00-inch 409 stainless steel tubing for improved exhaust flow\u003c\/li\u003e\n\u003cli\u003eLarge quad 4.00-inch polished double-wall 304 stainless steel exhaust tips\u003c\/li\u003e\n\u003cli\u003eDyno-tuned to maximize performance and exhaust efficiency\u003c\/li\u003e\n\u003cli\u003eRetains the factory resonator mid-pipe\u003c\/li\u003e\n\u003cli\u003eUses factory hanger locations for a precise, direct-fit installation\u003c\/li\u003e\n\u003cli\u003eIncludes clamps, hardware, and detailed installation instructions\u003c\/li\u003e\n\u003cli\u003eBolt-on axle-back design with factory-style fit and finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eProduces an aggressive exterior exhaust tone with a noticeable interior sound for an authentic muscle car experience.\u003c\/li\u003e\n\u003cli\u003eEnhances the Mustang GT's appearance with premium polished quad exhaust tips.\u003c\/li\u003e\n\u003cli\u003eImproves exhaust flow while maintaining excellent durability through stainless steel construction.\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for a precise fit without unnecessary modifications beyond the required factory muffler cut.\u003c\/li\u003e\n\u003cli\u003eMaintains compatibility with the factory rear valance and exhaust cutouts.\u003c\/li\u003e\n\u003cli\u003eBacked by Flowmaster's Limited Lifetime Warranty for long-term confidence and peace of mind.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePart Number: 817821\u003c\/li\u003e\n\u003cli\u003eProduct Type: Axle-Back Exhaust System\u003c\/li\u003e\n\u003cli\u003eExhaust Series: Outlaw\u003c\/li\u003e\n\u003cli\u003eSound Level: Aggressive\u003c\/li\u003e\n\u003cli\u003eMain Pipe Diameter: 3.00 inches\u003c\/li\u003e\n\u003cli\u003ePipe Material: 409 Stainless Steel\u003c\/li\u003e\n\u003cli\u003ePipe Finish: Natural\u003c\/li\u003e\n\u003cli\u003eMuffler Material: 409 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eMuffler Finish: Black High-Temperature Paint\u003c\/li\u003e\n\u003cli\u003eMuffler Type: Reflection\u003c\/li\u003e\n\u003cli\u003eMuffler Quantity: 2\u003c\/li\u003e\n\u003cli\u003eExhaust Tip Material: 304 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eExhaust Tip Diameter: 4.00 inches\u003c\/li\u003e\n\u003cli\u003eExhaust Tip Length: 5.25 inches\u003c\/li\u003e\n\u003cli\u003eExhaust Tip Finish: Polished\u003c\/li\u003e\n\u003cli\u003eExhaust Tip Color: Silver\u003c\/li\u003e\n\u003cli\u003eExhaust Tip Style: Round, Double-Wall, Angle-Cut\u003c\/li\u003e\n\u003cli\u003eTip Quantity: 4\u003c\/li\u003e\n\u003cli\u003eExit Style: Dual Rear Exit\u003c\/li\u003e\n\u003cli\u003eInlet Connection: Slip-Fit\u003c\/li\u003e\n\u003cli\u003eClamping Type: Flat Band\u003c\/li\u003e\n\u003cli\u003eClamps Included: Yes\u003c\/li\u003e\n\u003cli\u003eHangers Included: Yes\u003c\/li\u003e\n\u003cli\u003eMounting: Uses Factory Hanger Locations\u003c\/li\u003e\n\u003cli\u003eCatalytic Converter Included: No\u003c\/li\u003e\n\u003cli\u003eValve Included: No\u003c\/li\u003e\n\u003cli\u003eUPC: 700042038152\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eInstall Difficulty Level\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eEasy.\u003c\/strong\u003e This axle-back exhaust system is designed as a direct-fit upgrade that reuses the factory hanger locations and includes the required hardware and installation instructions. The factory mufflers must be cut from the original mid-pipe before installation, but no welding is required for a standard installation. Under ideal conditions, installation can be completed in approximately \u003cstrong\u003e1 hour\u003c\/strong\u003e, making it an excellent weekend upgrade for most DIY enthusiasts with basic hand tools.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFits the following vehicles:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2018 Ford Mustang GT Coupe – 5.0L V8 (Without Factory Active Performance Exhaust Valves)\u003c\/li\u003e\n\u003cli\u003e2018 Ford Mustang GT Convertible – 5.0L V8 (Without Factory Active Performance Exhaust Valves)\u003c\/li\u003e\n\u003cli\u003e2019 Ford Mustang GT Coupe – 5.0L V8 (Without Factory Active Performance Exhaust Valves)\u003c\/li\u003e\n\u003cli\u003e2019 Ford Mustang GT Convertible – 5.0L V8 (Without Factory Active Performance Exhaust Valves)\u003c\/li\u003e\n\u003cli\u003e2020 Ford Mustang GT Coupe – 5.0L V8 (Without Factory Active Performance Exhaust Valves)\u003c\/li\u003e\n\u003cli\u003e2020 Ford Mustang GT Convertible – 5.0L V8 (Without Factory Active Performance Exhaust Valves)\u003c\/li\u003e\n\u003cli\u003e2021 Ford Mustang GT Coupe – 5.0L V8 (Without Factory Active Performance Exhaust Valves)\u003c\/li\u003e\n\u003cli\u003e2021 Ford Mustang GT Convertible – 5.0L V8 (Without Factory Active Performance Exhaust Valves)\u003c\/li\u003e\n\u003cli\u003e2022 Ford Mustang GT Coupe – 5.0L V8 (Without Factory Active Performance Exhaust Valves)\u003c\/li\u003e\n\u003cli\u003e2022 Ford Mustang GT Convertible – 5.0L V8 (Without Factory Active Performance Exhaust Valves)\u003c\/li\u003e\n\u003cli\u003e2023 Ford Mustang GT Coupe – 5.0L V8 (Without Factory Active Performance Exhaust Valves)\u003c\/li\u003e\n\u003cli\u003e2023 Ford Mustang GT Convertible – 5.0L V8 (Without Factory Active Performance Exhaust Valves)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf there are any questions about this product or to report product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.\u003c\/p\u003e","brand":"Flowmaster","offers":[{"title":"Default Title","offer_id":47766406889650,"sku":"FLO817821","price":1065.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0607\/4341\/8034\/files\/27516c1d6155bb51fe6ba6bbed32b0c4L.jpg?v=1785248078","url":"https:\/\/morepowertuning.com\/products\/flowmaster-18-23-mustang-5-0l-outlaw-axle-back-exhaust-system-no-valves-1","provider":"More Power Tuning","version":"1.0","type":"link"}