Description

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.

Features

  • 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
  • Lifetime Limited Warranty

Specifications

2WD/4WD2WD
BrandFlowmaster
California Proposition 65 Chemical NameChromium (hexavalent compounds), Nickel (Metallic)
California Proposition 65 RequiredYes
Catalytic Converter QuantityNot Included
Clamping TypeFlat Band
Clamps IncludedYes
Emission Code5
Exhaust SeriesAmerican Thunder
Exhaust Tip ConnectionClamp-On
Exhaust Tip CutAngled
Exhaust Tip Diameter3
Exhaust Tip EdgeRolled Edge Angle Cut
Exhaust Tip FinishChrome
Exhaust Tip IntercooledNo
Exhaust Tip Length12
Exhaust Tip Material304 Stainless Steel
Exhaust Tip Quantity2
Exhaust Tip ResonatedNo
Exhaust Tip ShapeRound
Exhaust Tip WallSingle Wall
Exit PositionDual Out Rear
Exit StyleDual Rear Exit
FinishNatural
Gasket Or Seal IncludedNo
Grade TypePerformance
Hangers IncludedYes
Heat ShieldNo
Inlet Diameter2.5
Inlet TypeWeld-On
Main Piping Diameter2.50
Main Piping Diameter2-1/2
Material409 Stainless Steel
Mounting Bracket IncludedYes
Muffler (Left) Body Height4
Muffler (Left) Body Length13
Muffler (Left) Body Width9.75
Muffler (Left) TypeChambered
Muffler (Right) Body Height4
Muffler (Right) Body Length13
Muffler (Right) Body Width9.75
Muffler (Right) TypeChambered
Muffler Body Length13
Muffler Body Material409 Stainless Steel
Muffler Body ShapeOval
Muffler FinishBlack High-Temperature Paint Finish
Muffler Flanged InletNo
Muffler Flanged OutletNo
Muffler Inlet ConnectionSlip-Fit
Muffler Inlet Inside Diameter2.5
Muffler Inlet Outside Diameter2.63
Muffler Outlet ConnectionSlip-Fit
Muffler Outlet Quantity1
Muffler Part NumberKit Only
Muffler Quantity2
Muffler SeriesSuper 44 Series
Muffler TypeChambered
Outlet Diameter2.5
Pipe MaterialStainless Steel
Product TypeExhaust System
Sale CategoryExhaust
Single DualDual
Sound LevelAggressive / Moderate
Spring Bolt Kit IncludedNo
System TypeCrossmember-back
Tail Pipe Outlet Outside Diameter2.5
Tail Pipe Quantity2
Tail Pipe Tapered OutletNo
Tip Diameter3
Tip Quantity2
Tip ShapeRound
Tubing Diameter2.5
TypeCrossmember-back
Valve IncludedNo
Valve TypeNot Included

Compatibility

  • 1967 - 1970 Ford Mustang Shelby GT-500 7.0
  • 1967 - 1969 Ford Mustang Base 6.4
  • 1967 - 1968 Ford Mustang Base 4.7
  • 1967 - 1967 Ford Mustang Shelby GT-350 4.7
  • 1968 - 1970 Ford Mustang Base 7.0
  • 1968 - 1970 Ford Mustang Base 5.0
  • 1968 - 1968 Ford Mustang Shelby GT-500KR 7.0
  • 1968 - 1968 Ford Mustang Shelby GT-350 5.0
  • 1969 - 1970 Ford Mustang Boss 302 5.0
  • 1970 - 1970 Ford Mustang Mach 1 5.0
  • 1970 - 1970 Ford Mustang Grande 5.0
  • 1970 - 1970 Ford Mustang Grande 7.0
  • 1970 - 1970 Ford Mustang Mach 1 7.0

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.

Features

  • 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
  • Lifetime Limited Warranty
2WD/4WD2WD
BrandFlowmaster
California Proposition 65 Chemical NameChromium (hexavalent compounds), Nickel (Metallic)
California Proposition 65 RequiredYes
Catalytic Converter QuantityNot Included
Clamping TypeFlat Band
Clamps IncludedYes
Emission Code5
Exhaust SeriesAmerican Thunder
Exhaust Tip ConnectionClamp-On
Exhaust Tip CutAngled
Exhaust Tip Diameter3
Exhaust Tip EdgeRolled Edge Angle Cut
Exhaust Tip FinishChrome
Exhaust Tip IntercooledNo
Exhaust Tip Length12
Exhaust Tip Material304 Stainless Steel
Exhaust Tip Quantity2
Exhaust Tip ResonatedNo
Exhaust Tip ShapeRound
Exhaust Tip WallSingle Wall
Exit PositionDual Out Rear
Exit StyleDual Rear Exit
FinishNatural
Gasket Or Seal IncludedNo
Grade TypePerformance
Hangers IncludedYes
Heat ShieldNo
Inlet Diameter2.5
Inlet TypeWeld-On
Main Piping Diameter2.50
Main Piping Diameter2-1/2
Material409 Stainless Steel
Mounting Bracket IncludedYes
Muffler (Left) Body Height4
Muffler (Left) Body Length13
Muffler (Left) Body Width9.75
Muffler (Left) TypeChambered
Muffler (Right) Body Height4
Muffler (Right) Body Length13
Muffler (Right) Body Width9.75
Muffler (Right) TypeChambered
Muffler Body Length13
Muffler Body Material409 Stainless Steel
Muffler Body ShapeOval
Muffler FinishBlack High-Temperature Paint Finish
Muffler Flanged InletNo
Muffler Flanged OutletNo
Muffler Inlet ConnectionSlip-Fit
Muffler Inlet Inside Diameter2.5
Muffler Inlet Outside Diameter2.63
Muffler Outlet ConnectionSlip-Fit
Muffler Outlet Quantity1
Muffler Part NumberKit Only
Muffler Quantity2
Muffler SeriesSuper 44 Series
Muffler TypeChambered
Outlet Diameter2.5
Pipe MaterialStainless Steel
Product TypeExhaust System
Sale CategoryExhaust
Single DualDual
Sound LevelAggressive / Moderate
Spring Bolt Kit IncludedNo
System TypeCrossmember-back
Tail Pipe Outlet Outside Diameter2.5
Tail Pipe Quantity2
Tail Pipe Tapered OutletNo
Tip Diameter3
Tip Quantity2
Tip ShapeRound
Tubing Diameter2.5
TypeCrossmember-back
Valve IncludedNo
Valve TypeNot Included
  • 1967 - 1970 Ford Mustang Shelby GT-500 7.0
  • 1967 - 1969 Ford Mustang Base 6.4
  • 1967 - 1968 Ford Mustang Base 4.7
  • 1967 - 1967 Ford Mustang Shelby GT-350 4.7
  • 1968 - 1970 Ford Mustang Base 7.0
  • 1968 - 1970 Ford Mustang Base 5.0
  • 1968 - 1968 Ford Mustang Shelby GT-500KR 7.0
  • 1968 - 1968 Ford Mustang Shelby GT-350 5.0
  • 1969 - 1970 Ford Mustang Boss 302 5.0
  • 1970 - 1970 Ford Mustang Mach 1 5.0
  • 1970 - 1970 Ford Mustang Grande 5.0
  • 1970 - 1970 Ford Mustang Grande 7.0
  • 1970 - 1970 Ford Mustang Mach 1 7.0

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