{"product_id":"flowmaster-68-72-gm-a-body-2-5in-american-thunder-ss-exhaust-system","title":"Flowmaster 68-72 GM A-BODY 2.5in. American Thunder SS Exhaust System","description":"This American Thunder® exhaust system comes as a complete true dual Crossmember-Back exhaust for your 1968-1972 GM A-body with a V8 engine. These dual exhaust systems feature 2.50-inch mandrel-bent stainless steel tubing for maximum performance, includes a built-in H-pipe\/balance tube flowing into a pair of large case Super 40® mufflers that deliver an aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The 2.50-inch tailpipes exit at a slight angle down under the rear bumper for a strong muscular look. The system includes all hangers and necessary hardware for installation. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage and is covered by our Lifetime Limited Warranty.\nFits 1968-1972 GM A-Bodies with V8 engine. 2.50-inch Stainless Steel Pipes. - Aggressive sound\nFits 1968-1972 GM A-Bodies with V8 engine.\n\u003cul\u003e\n  \u003cli\u003eDoes Not Include Header Reducers or Downpipes for Factory Manifolds\u003c\/li\u003e\n  \u003cli\u003eH-pipe Crossover for Maximum Power and Deep Tone\u003c\/li\u003e\n  \u003cli\u003eSuper 40 Series Mufflers for Deep Powerful Sound\u003c\/li\u003e\n  \u003cli\u003eIncludes Hangers and Hardware for Installation\u003c\/li\u003e\n  \u003cli\u003eMandrel-bent 16-gauge Stainless Steel Tubing\u003c\/li\u003e\n  \u003cli\u003eCrossmember-Back True Dual Exhaust System\u003c\/li\u003e\n  \u003cli\u003eAggressive Exterior Exhaust Tone\u003c\/li\u003e\n  \u003cli\u003eLifetime Limited Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUpgrade your classic GM A-Body with the Flowmaster 817409 American Thunder exhaust system, a complete crossmember-back true dual exhaust designed for 1968-1972 Buick, Pontiac, and other GM A-Body vehicles equipped with a V8 engine. The system uses 2.5-inch mandrel-bent stainless steel tubing to support smooth exhaust flow, improved throttle response, and strong performance. Its stainless steel construction provides durable service for street-driven muscle cars and restoration projects.\u003cbr\u003eA built-in H-pipe crossover helps balance exhaust pulses while contributing to a deep, powerful tone. The included Super 40 Series mufflers produce an aggressive sound inside and outside the vehicle, making this system well suited for enthusiasts who want their performance-oriented exhaust note to be heard. Tailpipes exit at a slight angle beneath the rear bumper for a clean, muscular appearance.\u003cbr\u003eThe Flowmaster 817409 system includes the required hangers and installation hardware for a complete crossmember-back installation. It is designed for use with compatible headers or exhaust components and does not include header reducers or downpipes for factory manifolds. Professional installation may be recommended to verify fitment and ensure proper alignment. This product is covered by Flowmaster's Lifetime Limited Warranty. It is not emissions certified for use on pollution-controlled vehicles, and applicable emissions requirements should be confirmed before installation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eApplication: Fits 1968-1972 GM A-Body vehicles equipped with a V8 engine\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSystem Design: Complete crossmember-back true dual exhaust system\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eTubing: 2.5-inch mandrel-bent 16-gauge stainless steel tubing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCrossover: Built-in H-pipe crossover for improved exhaust balance, power potential, and deep tone\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMufflers: Super 40 Series mufflers deliver a deep, powerful, aggressive exhaust sound\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eTailpipes: Exit at a slight angle beneath the rear bumper for a muscular appearance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eInstallation: Includes hangers and necessary installation hardware\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatibility: Does not include header reducers or downpipes for factory manifolds\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWarranty: Covered by Flowmaster's Lifetime Limited Warranty\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEmissions: Not emissions certified for pollution-controlled vehicle applications\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\nBuick GS Base 1970\u003cbr\u003e\nBuick GS Base 1971\u003cbr\u003e\nBuick GS Base 1972\u003cbr\u003e\nBuick GS 350 Base 1968\u003cbr\u003e\nBuick GS 350 Base 1969\u003cbr\u003e\nBuick GS 400 Base 1968\u003cbr\u003e\nBuick GS 400 Base 1969\u003cbr\u003e\nBuick GS 455 Base 1970\u003cbr\u003e\nBuick GS 455 Base 1971\u003cbr\u003e\nBuick GS 455 Base 1972\u003cbr\u003e\nBuick GS 455 GSX 1970\u003cbr\u003e\nBuick Skylark 350 1970\u003cbr\u003e\nBuick Skylark 350 1972\u003cbr\u003e\nBuick Skylark Base 1968\u003cbr\u003e\nBuick Skylark Base 1969\u003cbr\u003e\nBuick Skylark Base 1970\u003cbr\u003e\nBuick Skylark Base 1971\u003cbr\u003e\nBuick Skylark Base 1972\u003cbr\u003e\nBuick Skylark Custom 1968\u003cbr\u003e\nBuick Skylark Custom 1969\u003cbr\u003e\nBuick Skylark Custom 1970\u003cbr\u003e\nBuick Skylark Custom 1971\u003cbr\u003e\nBuick Skylark Custom 1972\u003cbr\u003e\nBuick Special Base 1968\u003cbr\u003e\nBuick Special Base 1969\u003cbr\u003e\nBuick Sportwagon Base 1968\u003cbr\u003e\nBuick Sportwagon Base 1969\u003cbr\u003e\nBuick Sportwagon Custom 1968\u003cbr\u003e\nBuick Sportwagon Custom 1969\u003cbr\u003e\nChevrolet Chevelle 300 1968\u003cbr\u003e\nChevrolet Chevelle 300 Deluxe 1968\u003cbr\u003e\nChevrolet Chevelle 300 Deluxe 1969\u003cbr\u003e\nChevrolet Chevelle Base 1970\u003cbr\u003e\nChevrolet Chevelle Base 1971\u003cbr\u003e\nChevrolet Chevelle Base 1972\u003cbr\u003e\nChevrolet Chevelle Concours 1968\u003cbr\u003e\nChevrolet Chevelle Concours 1969\u003cbr\u003e\nChevrolet Chevelle Concours 1970\u003cbr\u003e\nChevrolet Chevelle Concours 1971\u003cbr\u003e\nChevrolet Chevelle Concours 1972\u003cbr\u003e\nChevrolet Chevelle Concours Estate 1969\u003cbr\u003e\nChevrolet Chevelle Concours Estate 1970\u003cbr\u003e\nChevrolet Chevelle Concours Estate 1971\u003cbr\u003e\nChevrolet Chevelle Concours Estate 1972\u003cbr\u003e\nChevrolet Chevelle Greenbrier 1969\u003cbr\u003e\nChevrolet Chevelle Greenbrier 1970\u003cbr\u003e\nChevrolet Chevelle Greenbrier 1971\u003cbr\u003e\nChevrolet Chevelle Greenbrier 1972\u003cbr\u003e\nChevrolet Chevelle Malibu 1968\u003cbr\u003e\nChevrolet Chevelle Malibu 1969\u003cbr\u003e\nChevrolet Chevelle Malibu 1970\u003cbr\u003e\nChevrolet Chevelle Malibu 1971\u003cbr\u003e\nChevrolet Chevelle Malibu 1972\u003cbr\u003e\nChevrolet Chevelle Nomad 1968\u003cbr\u003e\nChevrolet Chevelle Nomad 1969\u003cbr\u003e\nChevrolet Chevelle Nomad 1970\u003cbr\u003e\nChevrolet Chevelle Nomad 1971\u003cbr\u003e\nChevrolet Chevelle Nomad 1972\u003cbr\u003e\nChevrolet Chevelle SS 1971\u003cbr\u003e\nChevrolet Chevelle SS 1972\u003cbr\u003e\nChevrolet El Camino Base 1968\u003cbr\u003e\nChevrolet El Camino Base 1969\u003cbr\u003e\nChevrolet El Camino Base 1970\u003cbr\u003e\nChevrolet El Camino Base 1971\u003cbr\u003e\nChevrolet El Camino Base 1972\u003cbr\u003e\nChevrolet El Camino Custom 1968\u003cbr\u003e\nChevrolet El Camino Custom 1969\u003cbr\u003e\nChevrolet El Camino Custom 1970\u003cbr\u003e\nChevrolet El Camino Custom 1971\u003cbr\u003e\nChevrolet El Camino Custom 1972\u003cbr\u003e\nChevrolet El Camino SS 1968\u003cbr\u003e\nChevrolet El Camino SS 1969\u003cbr\u003e\nChevrolet El Camino SS 1970\u003cbr\u003e\nChevrolet El Camino SS 1971\u003cbr\u003e\nChevrolet El Camino SS 1972\u003cbr\u003e\nChevrolet Monte Carlo Base 1970\u003cbr\u003e\nChevrolet Monte Carlo Base 1971\u003cbr\u003e\nChevrolet Monte Carlo Base 1972\u003cbr\u003e\nGMC Sprint Base 1971\u003cbr\u003e\nGMC Sprint Base 1972\u003cbr\u003e\nGMC Sprint Custom 1972\u003cbr\u003e\nOldsmobile 442 Base 1968\u003cbr\u003e\nOldsmobile 442 Base 1969\u003cbr\u003e\nOldsmobile 442 Base 1970\u003cbr\u003e\nOldsmobile 442 Base 1971\u003cbr\u003e\nOldsmobile Cutlass Base 1968\u003cbr\u003e\nOldsmobile Cutlass Base 1969\u003cbr\u003e\nOldsmobile Cutlass Base 1970\u003cbr\u003e\nOldsmobile Cutlass Base 1971\u003cbr\u003e\nOldsmobile Cutlass Base 1972\u003cbr\u003e\nOldsmobile Cutlass Cruiser 1972\u003cbr\u003e\nOldsmobile Cutlass S 1968\u003cbr\u003e\nOldsmobile Cutlass S 1971\u003cbr\u003e\nOldsmobile Cutlass S 1972\u003cbr\u003e\nOldsmobile Cutlass Supreme Base 1968\u003cbr\u003e\nOldsmobile Cutlass Supreme Base 1969\u003cbr\u003e\nOldsmobile Cutlass Supreme Base 1970\u003cbr\u003e\nOldsmobile Cutlass Supreme Base 1971\u003cbr\u003e\nOldsmobile Cutlass Supreme Base 1972\u003cbr\u003e\nOldsmobile F85 Base 1968\u003cbr\u003e\nOldsmobile F85 Base 1969\u003cbr\u003e\nOldsmobile F85 Base 1970\u003cbr\u003e\nOldsmobile F85 Base 1971\u003cbr\u003e\nOldsmobile F85 Base 1972\u003cbr\u003e\nOldsmobile Vista Cruiser Base 1968\u003cbr\u003e\nOldsmobile Vista Cruiser Base 1969\u003cbr\u003e\nOldsmobile Vista Cruiser Base 1970\u003cbr\u003e\nOldsmobile Vista Cruiser Base 1971\u003cbr\u003e\nOldsmobile Vista Cruiser Base 1972\u003cbr\u003e\nPontiac Grand Prix Base 1968\u003cbr\u003e\nPontiac Grand Prix Base 1969\u003cbr\u003e\nPontiac Grand Prix Base 1970\u003cbr\u003e\nPontiac Grand Prix Base 1971\u003cbr\u003e\nPontiac Grand Prix Base 1972\u003cbr\u003e\nPontiac GTO Base 1968\u003cbr\u003e\nPontiac GTO Base 1969\u003cbr\u003e\nPontiac GTO Base 1970\u003cbr\u003e\nPontiac GTO Base 1971\u003cbr\u003e\nPontiac GTO Base 1972\u003cbr\u003e\nPontiac GTO The Judge 1970\u003cbr\u003e\nPontiac GTO The Judge 1971\u003cbr\u003e\nPontiac LeMans Base 1968\u003cbr\u003e\nPontiac LeMans Base 1969\u003cbr\u003e\nPontiac LeMans Base 1970\u003cbr\u003e\nPontiac LeMans Base 1971\u003cbr\u003e\nPontiac LeMans Base 1972\u003cbr\u003e\nPontiac LeMans Luxury 1972\u003cbr\u003e\nPontiac LeMans Safari 1969\u003cbr\u003e\nPontiac LeMans Safari 1970\u003cbr\u003e\nPontiac LeMans Sport 1970\u003cbr\u003e\nPontiac LeMans Sport 1971\u003cbr\u003e\nPontiac LeMans Sport 1972\u003cbr\u003e\nPontiac LeMans T37 1971\u003cbr\u003e\nPontiac Tempest Base 1968\u003cbr\u003e\nPontiac Tempest Base 1969\u003cbr\u003e\nPontiac Tempest Base 1970\u003cbr\u003e\nPontiac Tempest Custom 1968\u003cbr\u003e\nPontiac Tempest Custom 1969\u003cbr\u003e\nPontiac Tempest GT 1970\u003cbr\u003e\nPontiac Tempest Safari 1968\u003cbr\u003e\nPontiac Tempest Safari 1969","brand":"Flowmaster","offers":[{"title":"Default Title","offer_id":67590100648252,"sku":"flo817409","price":1117.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1865\/9007\/files\/ddfdf4bfa5a7f02c025d44ca1d344d78L.jpg?v=1790565136","url":"https:\/\/necycleshop.com\/products\/flowmaster-68-72-gm-a-body-2-5in-american-thunder-ss-exhaust-system","provider":"NE Cycle Shop","version":"1.0","type":"link"}