{"product_id":"flowmaster-817104","title":"Flowmaster 817104 - Header-back System 409S - Dual Rear Exit - American Thunder - Moderate Sound","description":"\u003cp\u003eFlowmaster 817104 - Header-back System 409S - Dual Rear Exit - American Thunder - Moderate Sound\u003c\/p\u003e\u003cp\u003eExhaust System - American Thunder - Header-Back - 2-1\/2 in Tailpipe - Stainless - Natural - GM F-Body \/ X-Body 1967-74 - Kit\u003c\/p\u003e\u003cp\u003eAmerican Thunder Header Back Exhaust System; Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X-Member Back\/H-Pipe\/Hardware\/80 Series™ Crossflow Muffler;\u003c\/p\u003e\u003cp\u003eFlowmaster(R) is proud to introduce our American Thunder(R) dual exhaust system for 1967-1974 Chevrolet Camaro, Pontiac Firebird and 1968-1974 Chevrolet Nova's. This all stainless steel exhaust system features our exclusive design 80 Series(TM) Crossflow muffler, all mandrel-bent dual 2.50-inch pipes including an H-pipe crossover for a deep smooth tone that also minimizes any back-rap on deceleration. The dual 2.50-inch stainless steel tailpipes provide a deep rich sound and optimum performance. This crossmember-back 409S stainless system gives these classic muscle cars a moderate tone inside and out. Using the crossflow design, this exhaust places the muffler in the factory location behind the rear axle retaining full ground clearance under the car while offering all the performance benefits of a full dual exhaust system. The system includes all parts, hardware and illustrated instructions, and like all Flowmaster stainless steel street products, it includes our Limited Lifetime Warranty.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eH-pipe Crossover for Maximum Power and Deep Tone\u003c\/li\u003e\n\u003cli\u003eIncludes Hangers and Hardware for Easy Installation\u003c\/li\u003e\n\u003cli\u003e80 Series Cross-flow Performance Muffler\u003c\/li\u003e\n\u003cli\u003eMandrel-bent Stainless Steel Tubing\u003c\/li\u003e\n\u003cli\u003eModerate Exterior Exhaust Tone\u003c\/li\u003e\n\u003cli\u003eMaximum Ground Clearance\u003c\/li\u003e\n\u003cli\u003eStainless Steel Construction\u003c\/li\u003e\n\u003cli\u003eLifetime Limited Warranty\u003c\/li\u003e\n\u003cli\u003eCrossmember-Back System\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: \u003cspan\u003eFlowmaster\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCARB (California) Compliant\u003c\/strong\u003e: \u003cspan\u003eYes\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCatalytic Converter Included\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCatalytic Converter Quantity\u003c\/strong\u003e: \u003cspan\u003e0\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCategory\u003c\/strong\u003e: \u003cspan\u003eExhaust\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eClamping Type\u003c\/strong\u003e: \u003cspan\u003eFlat Band\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eClamps Included\u003c\/strong\u003e: \u003cspan\u003eYes\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eDrive\u003c\/strong\u003e: \u003cspan\u003e2WD\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEmission Code\u003c\/strong\u003e: \u003cspan\u003e5\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eExhaust Series\u003c\/strong\u003e: \u003cspan\u003eAmerican Thunder\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eExhaust Tip Quantity\u003c\/strong\u003e: \u003cspan\u003eSold Separately\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eExhaust Tip Quantity\u003c\/strong\u003e: \u003cspan\u003e0\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eExhaust Tip Shape\u003c\/strong\u003e: \u003cspan\u003eRound\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eExit Style\u003c\/strong\u003e: \u003cspan\u003eDual Out Rear\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: \u003cspan\u003eNatural\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eGasket Or Seal Included\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eGrade Type\u003c\/strong\u003e: \u003cspan\u003ePerformance\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eHangers Included\u003c\/strong\u003e: \u003cspan\u003eYes\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eHeat Shield Included\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eInlet Diameter\u003c\/strong\u003e: \u003cspan\u003e2.50\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eInlet Type\u003c\/strong\u003e: \u003cspan\u003eWeld-On\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMain Piping Diameter\u003c\/strong\u003e: \u003cspan\u003e2.50\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMounting Bracket Included\u003c\/strong\u003e: \u003cspan\u003eYes\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler (Rear) Body Height\u003c\/strong\u003e: \u003cspan\u003e4.00\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler (Rear) Body Length\u003c\/strong\u003e: \u003cspan\u003e22.25\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler (Rear) Body Width\u003c\/strong\u003e: \u003cspan\u003e9.50\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler (Rear) Finish\u003c\/strong\u003e: \u003cspan\u003eBlack High-Temperature Paint Finish\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler (Rear) Type\u003c\/strong\u003e: \u003cspan\u003eChambered\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Body Height\u003c\/strong\u003e: \u003cspan\u003e4.00\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Body Length\u003c\/strong\u003e: \u003cspan\u003e22.25\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Body Material\u003c\/strong\u003e: \u003cspan\u003e409 Stainless Steel\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Body Shape\u003c\/strong\u003e: \u003cspan\u003eOval\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Body Width\u003c\/strong\u003e: \u003cspan\u003e9.50\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Finish\u003c\/strong\u003e: \u003cspan\u003eBlack High-Temperature Paint Finish\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Flanged Inlet\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Flanged Outlet\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Included\u003c\/strong\u003e: \u003cspan\u003eYes\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Inlet Connection\u003c\/strong\u003e: \u003cspan\u003eSlip-Fit\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Inlet Inside Diameter\u003c\/strong\u003e: \u003cspan\u003e2.50\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Inlet Outside Diameter\u003c\/strong\u003e: \u003cspan\u003e2.63\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Outlet Connection\u003c\/strong\u003e: \u003cspan\u003eSlip-Fit\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Outlet Quantity\u003c\/strong\u003e: \u003cspan\u003e1\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Part Number\u003c\/strong\u003e: \u003cspan\u003eKit Only\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Quantity\u003c\/strong\u003e: \u003cspan\u003e1\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Series\u003c\/strong\u003e: \u003cspan\u003e80 Series Crossflow\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMuffler Type\u003c\/strong\u003e: \u003cspan\u003eChambered\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003epart type\u003c\/strong\u003e: \u003cspan\u003eExhaust System\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePipe Color\u003c\/strong\u003e: \u003cspan\u003eSilver\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePipe Color\u003c\/strong\u003e: \u003cspan\u003eBlack\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePipe Material\u003c\/strong\u003e: \u003cspan\u003e409 Stainless Steel\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: \u003cspan\u003eExhaust System\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSound Level\u003c\/strong\u003e: \u003cspan\u003eModerate\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSpring Bolt Kit Included\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSub Category\u003c\/strong\u003e: \u003cspan\u003eExhaust and Tail Pipes\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTail Pipe Outlet Outside Diameter\u003c\/strong\u003e: \u003cspan\u003e2.50\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTail Pipe Quantity\u003c\/strong\u003e: \u003cspan\u003e2\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTail Pipe Quantity\u003c\/strong\u003e: \u003cspan\u003eDual\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTail Pipe Tapered Outlet\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: \u003cspan\u003eCrossmember-back\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Included\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Type\u003c\/strong\u003e: \u003cspan\u003eNot Applicable\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWarning\u003c\/strong\u003e: \u003cspan\u003eCalifornia Proposition 65\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Flowmaster","offers":[{"title":"Default Title","offer_id":47299621159050,"sku":"FLO-817104","price":1249.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/0619\/2778\/files\/0_817104_2_normalized.jpg?v=1776727704","url":"https:\/\/www.onlyinstock.com\/products\/flowmaster-817104","provider":"Only In 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