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American Thunder Header-Back Exhaust System 1967-1970 Ford Mustang V8
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FLOWMASTERPART NUMBER: 389-817281

American Thunder Header-Back Exhaust System 1967-1970 Ford Mustang V8

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Ford Mustang V8
American Thunder Header-Back Exhaust System
  • 1967-1970 Ford Mustang V8
  • 2.5" Tubing
  • 3" Polished SS Tips
  • Dual Rear Exit
  • Super 44 Series Muffler
  • 409S Stainless Steel

    Flowmaster 817281 Features:

    For the person who is looking for a true dual Crossmember-Back exhaust system with an moderate to aggressive exhaust tone. With an easy fit in mind, these systems are constructed from 16-gauge mandrel-bent stainless steel tubing with a built-in H-pipe crossover, a pair of specially selected Super 44 Series mufflers and includes all hangers and hardware necessary for installation. This system fits through the factory rear valance exhaust cutouts and includes a pair of 3.00-inch polished stainless steel tips. The American Thunder systems deliver a moderate to aggressive interior and exterior tone and are best suited to the enthusiast who wants their performance to be heard. Like all Flowmaster exhaust systems, the benefits include improved throttle response, power and mileage. If you prefer aluminized steel construction, check out optional system# 17281. Notes: Does Not fit convertibles or cars with staggered shocks. Does Not include header reducer cones or downpipes for factory manifolds.

    • Super 44 Series Performance Mufflers for Deep Powerful Sound
    • Includes Hangers and Hardware for Installation
    • Mandrel-bent 16-gauge Stainless Steel Tubing
    • Aggressive to Moderate Exterior Exhaust Tone
    • 3.00-inch Polished 304 Stainless Steel Tips
    • Crossmember-Back True Dual Exhaust System
    • H-pipe Crossover for Maximum Power
    • Does Not Include Header Reducers or Downpipes for Factory Manifolds
  • Part TypeExhaust System
    BrandFLOWMASTER
    Package Height10.0
    Package Width15.0
    Package Length58.0
    Weight58.0 PG
    Tailpipe Diameter (In.)2.5
    Muffler Inlet Inside Diameter2.50 in.
    Hangers IncludedYes
    Main Piping Diameter2.50 in.
    Tail Pipe QuantityDual
    Inlet TypeWeld-On
    Tip CutSlant
    Exhaust Tip Material304 Stainless Steel
    Catalytic Converter Quantity0
    Exit LocationSplit Rear
    Inlet QuantityOne
    Muffler Body Length13 in.
    Sound LevelAggressive / Moderate
    Muffler MaterialStainless steel
    Muffler Body Material409 Stainless Steel
    Exhaust Tip CutAngled
    Gasket Or Seal IncludedNo
    Exhaust Tip IntercooledNo
    Pipe ColorSilver
    System FinishNatural
    Muffler Quantity2
    Muffler Inlet Outside Diameter2.63 in.
    Exit QuantityTwo
    Tip MaterialStainless steel
    Muffler Flanged OutletNo
    Tip QuantitySingle
    Exhaust Tip ResonatedNo
    Exhaust TypeDual
    Catalytic Converter IncludedNo
    Heat Shield IncludedNo
    Part CategoryPerformance Parts
    Hardware IncludedYes
    Exhaust Tip WallSingle Wall
    Exhaust Tip Quantity2
    Exhaust Tip FinishPolished
    Exhaust Tip EdgeRolled Edge Angle Cut
    Valve IncludedNo
    Muffler TypeChambered
    Pipe Material409 Stainless Steel
    Muffler Body Width9.50 in.
    Tail Pipe Tapered OutletNo
    Muffler Body ShapeOval
    Mounting Bracket IncludedYes
    Muffler Outlet Quantity1
    Muffler FinishBlack High-Temperature Paint Finish
    Inlet Diameter2.50 in.
    Clamps IncludedYes
    Muffler StyleChambered
    Tip Outlet Size3 in (76.2 mm)
    FinishNatural
    Exit StyleDual Out Rear
    Muffler Body Height4 in.
    Tip IncludedYes
    Clamping TypeFlat Band
    Muffler Flanged InletNo
    Spring Bolt Kit IncludedNo
    Muffler SeriesSuper 44 Series
    QuantitySold as a kit
    Muffler IncludedYes
    Exhaust Tip ConnectionClamp-On
    System StyleHeader-back
    Tail Pipe Outlet Outside Diameter2.50 in.
    Muffler ConfigurationSingle inlet/Single outlet
    System MaterialStainless steel
    Valve TypeNot Applicable
    Tip Edge StyleRolled edge
    Tip ShapeRound
    Intermediate Pipe Diameter2.5 in (63.5 mm)
    Exhaust Tip Diameter3 in.
    Part FitmentSemi Universal
    Vendor Part Number817281
    Package Qty1
    Package TypeEA
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