{"product_id":"flowmaster-04-08-ford-f150-american-thunder-ss-exhaust-system","title":"04-08 Ford F-150 4.6L\/5.4L Flowmaster 817417 American Thunder Cat-back Exhaust System","description":"\u003ch2\u003e\u003cstrong\u003eFlowmaster 817417 American Thunder Cat-Back Exhaust System\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe Flowmaster American Thunder Cat-Back Exhaust System is engineered for 2004-2008 Ford F-150 and Lincoln Mark LT trucks equipped with the 4.6L or 5.4L engines. Designed for drivers who want a bold exhaust presence without sacrificing everyday drivability, this performance exhaust system delivers an aggressive exterior sound with a moderate interior tone. The system features Flowmaster's specially designed Super 40 Series chambered muffler, dyno-tuned performance characteristics, and a dual-exit design that enhances the truck’s appearance while supporting improved exhaust flow. With factory-style hanger locations, included hardware, and a bolt-on installation design, this American Thunder system provides a practical upgrade for truck owners seeking classic Flowmaster sound, durable construction, and a premium performance exhaust solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFlowmaster American Thunder Series cat-back exhaust system designed for performance truck applications.\u003c\/li\u003e\n\u003cli\u003eSuper 40 Series chambered performance muffler provides a deep, aggressive exhaust tone.\u003c\/li\u003e\n\u003cli\u003eModerately aggressive exterior sound with a controlled interior tone for daily driving comfort.\u003c\/li\u003e\n\u003cli\u003eDyno-tuned design helps maximize exhaust performance and flow characteristics.\u003c\/li\u003e\n\u003cli\u003eDual-out rear or dual-out side exit configuration allows customized exhaust appearance.\u003c\/li\u003e\n\u003cli\u003eDual 2.50-inch tailpipes provide a muscular performance look.\u003c\/li\u003e\n\u003cli\u003eLarge 3.00-inch polished stainless steel exhaust tips add a premium finishing touch.\u003c\/li\u003e\n\u003cli\u003eUses factory hanger locations for a straightforward bolt-on installation.\u003c\/li\u003e\n\u003cli\u003eIncludes necessary clamps, hangers, mounting brackets, and installation hardware.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProvides a noticeable Flowmaster performance sound upgrade compared to the factory exhaust system.\u003c\/li\u003e\n\u003cli\u003eEnhances the truck’s exterior styling with polished stainless steel exhaust tips and dual exits.\u003c\/li\u003e\n\u003cli\u003eOffers durable exhaust performance with stainless steel components designed for long-term use.\u003c\/li\u003e\n\u003cli\u003eMaintains a comfortable driving experience with a moderate interior sound level.\u003c\/li\u003e\n\u003cli\u003eIdeal for truck enthusiasts looking for improved exhaust character, appearance, and performance.\u003c\/li\u003e\n\u003cli\u003eCovered by Flowmaster’s Lifetime Limited Warranty for added product confidence.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: Flowmaster\u003c\/li\u003e\n\u003cli\u003eSeries: American Thunder\u003c\/li\u003e\n\u003cli\u003ePart Number: 817417\u003c\/li\u003e\n\u003cli\u003eProduct Type: Cat-Back Exhaust System\u003c\/li\u003e\n\u003cli\u003eExhaust Sound Level: Aggressive \/ Moderate\u003c\/li\u003e\n\u003cli\u003eMuffler Series: Super 40 Series\u003c\/li\u003e\n\u003cli\u003eMuffler Type: Chambered\u003c\/li\u003e\n\u003cli\u003eMuffler Material: 409 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eMuffler Finish: Black high-temperature paint finish\u003c\/li\u003e\n\u003cli\u003ePipe Material: 409 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eMain Piping Diameter: 2.50 inches\u003c\/li\u003e\n\u003cli\u003eTail Pipe Diameter: 2.50 inches\u003c\/li\u003e\n\u003cli\u003eExhaust Tip Diameter: 3.00 inches\u003c\/li\u003e\n\u003cli\u003eExhaust Tip Material: 304 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eExhaust Tip Finish: Polished stainless steel\u003c\/li\u003e\n\u003cli\u003eExhaust Tip Color: Silver\u003c\/li\u003e\n\u003cli\u003eExhaust Tip Quantity: 2\u003c\/li\u003e\n\u003cli\u003eExit Style: Dual Out Rear \/ Dual Out Side\u003c\/li\u003e\n\u003cli\u003eTip Shape: Round\u003c\/li\u003e\n\u003cli\u003eTip Style: Angled cut with rolled edge\u003c\/li\u003e\n\u003cli\u003eClamps Included: Yes\u003c\/li\u003e\n\u003cli\u003eHangers Included: Yes\u003c\/li\u003e\n\u003cli\u003eCatalytic Converter Included: No\u003c\/li\u003e\n\u003cli\u003eDrive Compatibility: 2WD and 4WD models\u003c\/li\u003e\n\u003cli\u003eWheelbase Compatibility: All wheelbases\u003c\/li\u003e\n\u003cli\u003eCalifornia Proposition 65: Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstall Difficulty level\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis exhaust system is designed for an easy bolt-on installation using factory hanger locations and included mounting hardware. With basic hand tools and proper vehicle support, installation can typically be completed in approximately 2 hours, making it a manageable upgrade for experienced do-it-yourself installers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2004-2008 Ford F-150 with 4.6L V8 engine\u003c\/li\u003e\n\u003cli\u003e2004-2008 Ford F-150 with 5.4L V8 engine\u003c\/li\u003e\n\u003cli\u003e2004-2008 Lincoln Mark LT with 4.6L V8 engine\u003c\/li\u003e\n\u003cli\u003e2004-2008 Lincoln Mark LT with 5.4L V8 engine\u003c\/li\u003e\n\u003cli\u003eFits 2-wheel drive and 4-wheel drive models\u003c\/li\u003e\n\u003cli\u003eFits all wheelbase configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor 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":47771423965362,"sku":"FLO817417","price":1117.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0607\/4341\/8034\/files\/499239b32b681dbe597566fbb28a76d5L.jpg?v=1785337488","url":"https:\/\/morepowertuning.com\/products\/flowmaster-04-08-ford-f150-american-thunder-ss-exhaust-system","provider":"More Power Tuning","version":"1.0","type":"link"}