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Exhaust System Kit
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Exhaust System Kit (Flowmaster) for 1967-1970 Ford Mustang NEW

Out of Stock
$ 1,001 .08
120-DayReturns
LifetimeWarranty
100%Money-Back

Product Notes Read before buying

⚠️ Most jobs typically require 2 of this item.
Dual; Dual Rear Exit; Incl. 2.5 in. Tubing/H-Pipe/Hardware/Super 44 Series(TM) Mufflers/3.0 in. Stainless Steel Tips;Legal On Non-Emissions Controlled Vehicles Or For Race Use Does Not Fit Convertibles~For Cars w/Valance Cutouts
American Thunder Downpipe Back Exhaust System
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 aluminized steel tubing with a built-in H-pipe crossover. The pair of specially selected Super 44 Series performance mufflers flows into 2.50-inch mandrel-bent tailpipes 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. All aluminized steel exhaust systems are covered by our 3-year Limited Warranty. If you prefer stainless steel construction, check out optional system# 817281 which is covered by out Lifetime Limited Warranty. Notes: Does Not fit convertibles or cars with staggered shocks. Does Not include header reducer cones or downpipes for factory manifolds.
Brand: Flowmaster
Condition: New
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Specifications & Info


Attribute Value
Exhaust Series American Thunder
Exhaust Type Dual
Exit Position Dual Rear
Exit Style Straight
Heat Shield Attached No
Inlet Diameter 2.500 In.
Inlet Inside Diameter N/a
Muffler Count 2
Muffler Part Number 942546
Muffler Series Super 44 Series
Outlet Outside Diameter 2.500 In.
Sound Level Aggressive
System Type Header Back
Tail Pipe Diameter 2.500 In.
Tip Quantity 2
Tubing Diameter 2.500 In.
WARNING CA Proposition 65 Yes

Vehicle Fitment Guide

This part fits the following vehicles:

Ford 1 model (tapclick to expand)(tapclick to hide)
Mustang 1967-1970 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Convertible 1969 - 1970 L6 4.1L RWD Automatic & Manual & U/K
Base Convertible 1969 - 1970 V8 5.8L RWD Automatic & Manual & U/K
Base Convertible 1968 - 1970 V8 5.0L RWD Automatic & Manual & U/K
Base Convertible 1968 - 1970 V8 7.0L RWD Automatic & Manual & U/K
Base Convertible 1967 - 1970 L6 3.3L RWD Automatic & Manual & U/K
Base Convertible 1967 - 1968 V8 4.7L RWD Automatic & Manual & U/K
Base Convertible 1967 - 1969 V8 6.4L RWD Automatic & Manual & U/K
Base Fastback 1969 - 1970 L6 4.1L RWD Automatic & Manual & U/K
Base Fastback 1969 - 1970 V8 5.8L RWD Automatic & Manual & U/K
Base Fastback 1968 - 1970 V8 5.0L RWD Automatic & Manual & U/K
Base Fastback 1968 - 1970 V8 7.0L RWD Automatic & Manual & U/K
Base Fastback 1967 - 1970 L6 3.3L RWD Automatic & Manual & U/K
Base Fastback 1967 - 1968 V8 4.7L RWD Automatic & Manual & U/K
Base Fastback 1967 - 1969 V8 6.4L RWD Automatic & Manual & U/K
Base Hardtop 1969 - 1970 L6 4.1L RWD Automatic & Manual & U/K
Base Hardtop 1969 - 1970 V8 5.8L RWD Automatic & Manual & U/K
Base Hardtop 1968 - 1970 V8 5.0L RWD Automatic & Manual & U/K
Base Hardtop 1968 - 1970 V8 7.0L RWD Automatic & Manual & U/K
Base Hardtop 1967 - 1970 L6 3.3L RWD Automatic & Manual & U/K
Base Hardtop 1967 - 1968 V8 4.7L RWD Automatic & Manual & U/K
Base Hardtop 1967 - 1969 V8 6.4L RWD Automatic & Manual & U/K
Boss 302 Fastback 1969 - 1970 V8 5.0L RWD U/K
Boss 429 Fastback 1969 - 1970 V8 7.0L RWD U/K
Grande Hardtop 1970 L6 3.3L RWD U/K
Grande Hardtop 1970 L6 4.1L RWD U/K
Grande Hardtop 1970 V8 5.0L RWD U/K
Grande Hardtop 1970 V8 5.8L RWD U/K
Grande Hardtop 1970 V8 7.0L RWD U/K
Mach 1 Fastback 1970 V8 5.0L RWD U/K
Mach 1 Fastback 1970 V8 5.8L RWD U/K
Mach 1 Fastback 1970 V8 7.0L RWD U/K
Shelby GT-350 Convertible 1969 - 1970 V8 5.8L RWD U/K
Shelby GT-350 Convertible 1968 V8 5.0L RWD U/K
Shelby GT-350 Fastback 1969 - 1970 V8 5.8L RWD U/K
Shelby GT-350 Fastback 1968 V8 5.0L RWD U/K
Shelby GT-350 Fastback 1967 V8 4.7L RWD U/K
Shelby GT-500 Convertible 1967 - 1970 V8 7.0L RWD U/K
Shelby GT-500 Fastback 1967 - 1970 V8 7.0L RWD U/K
Shelby GT-500KR Convertible 1968 V8 7.0L RWD U/K
Shelby GT-500KR Fastback 1968 V8 7.0L RWD U/K
Verify before ordering — please confirm your vehicle's year, make, model and sub-model specifications before placing your order. If anything is unclear, our customer service team is available to help.

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Shipping Information

We offer fast, reliable shipping on all orders:

  • Ships to all countries via US Postal Service Priority Mail.
  • Most orders ship within 1 business day.
  • Delivery time: 1-4 business days after shipment.
  • International shipping available, including APO/FPO addresses.
  • Tracking information provided for all shipments.
  • Additional handling fees may apply for oversized/overweight packages.

Lifetime Warranty

This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.

Warranty does NOT cover:

  • Shipping costs or labor expenses.
  • Installation errors.
  • Parts used for racing.
  • Commercial vehicle parts.

Returns (120 Days)

We want you to be 100% satisfied with your purchase. That's why we offer:

  • 120-Day Returns - Return any part within 120 days from date of receipt.
  • Must obtain RMA (Return Merchandise Authorization) number before returning.
  • Parts must be in original condition, uninstalled, unaltered, and in original packaging.
  • Important: Electrical parts are not returnable if unsealed.
  • Please inspect parts upon arrival and notify us within 5 days of receiving incorrect or damaged parts.
  • Refunds processed after warehouse receives return and credited to original payment method.
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 aluminized steel tubing with a built-in H-pipe crossover. The pair of specially selected Super 44 Series performance mufflers flows into 2.50-inch mandrel-bent tailpipes 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. All aluminized steel exhaust systems are covered by our 3-year Limited Warranty. If you prefer stainless steel construction, check out optional system# 817281 which is covered by out Lifetime Limited Warranty. Notes: Does Not fit convertibles or cars with staggered shocks. Does Not include header reducer cones or downpipes for factory manifolds.

Fits Years: 1967 1968 1969 1970

Fits Models: Mustang

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