SKU: 39634967069

1964-1966 Ford Mustang Exhaust Flowmaster Stainless Steel

Sale price$449.98 Regular price$499.98
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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25

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Description

1964-1966 Ford Mustang Exhaust Flowmaster Stainless SteelOverview: This American Thunder Crossmember Back exhaust system is custom designed for the 1964 1966 Ford Mustang and is perfect for the person looking for a complete 2. 50 inch dual exhaust system with a moderately aggressive exterior tone, and a moderate interior sound. With easy fit in mind, these 16 gauge aluminized steel systems feature all mandrel bent tubing, an H pipe to equalize the exhaust pressures and a pair of specially selected 40 Series

Overview:

This American Thunder® Crossmember-Back exhaust system is custom designed for the 1964-1966 Ford Mustang and is perfect for the person looking for a complete 2.50-inch dual exhaust system with a moderately aggressive exterior tone, and a moderate interior sound. With easy fit in mind, these 16-gauge aluminized steel systems feature all mandrel-bent tubing, an H-pipe to equalize the exhaust pressures and a pair of specially selected 40 Series Delta Flow performance mufflers for a deep powerful sound. The mandrel-bent 2.50-inch tailpipes tuck up out of the way for maximum clearance and the last few feet is all polished stainless steel for a show car look. Like all Flowmaster® systems, benefits include improved throttle response, power, and mileage. Designed for an easy fit, these systems include all necessary parts, hardware and instructions for an easy installation. The system is covered by our 3-year Limited Warranty. Connects to existing header collector reducer cones or manifold downpipes(not included.) If you prefer a full stainless steel system with a Lifetime Limited Warranty, check out exhaust system #817273. Notes: For non GT and hardtop models.

Features:

  • 2.50 and 3.00-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
  • A 4.00-inch black ceramic coated tip adds a custom look to the truck
  • Includes complete hardware and factory styled hangers in the stock location for an easy installation
  • Flow FX “stright through” performance muffler delivers a deep, aggressive to moderate performance tone and improves exhaust flow
  • Backed by Flowmaster’s Lifetime Limited Warranty
  • Max gains of 6 hp and 5 lb.ft. of torque at the rear wheels
  • Specs:

  • Brand: Flowmaster
  • CARB (California) Compliant: Yes
  • Catalytic Converter Included: No
  • Catalytic Converter Quantity: 0
  • Clamping Type: U-Bolt
  • Clamps Included: Yes
  • Emission Code: 5
  • Exhaust Series: American Thunder
  • Exhaust Tip Connection: Welded
  • Exhaust Tip Cut: Angled
  • Exhaust Tip Edge: Slash Cut
  • Exhaust Tip Finish: Polished
  • Exhaust Tip Material: 304 Stainless Steel
  • Exhaust Tip Quantity: 2
  • Exhaust Tip Shape: Round
  • Exit Style: Dual Out Rear
  • Finish: Aluminized
  • Gasket Or Seal Included: No
  • Grade Type: Performance
  • Hangers Included: Yes
  • Heat Shield Included: No
  • Inlet Diameter: 2.5
  • Inlet Type: Weld-On
  • Main Piping Diameter: 2.5
  • Mounting Bracket Included: Yes
  • Muffler (Left) Body Height: 4
  • Muffler (Left) Body Length: 13
  • Muffler (Left) Body Width: 9.75
  • Muffler (Left) Type: Chambered
  • Muffler (Right) Body Height: 4
  • Muffler (Right) Body Length: 13
  • Muffler (Right) Body Width: 9.75
  • Muffler (Right) Type: Chambered
  • Muffler Body Height: 4
  • Muffler Body Length: 13
  • Muffler Body Material: Aluminized Steel
  • Muffler Body Shape: Oval
  • Muffler Body Width: 9.75
  • Muffler Finish: Black High-Temperature Paint Finish
  • Muffler Flanged Inlet: No
  • Muffler Flanged Outlet: No
  • Muffler Included: Yes
  • Muffler Inlet Connection: Slip-Fit
  • Muffler Inlet Inside Diameter: 2.5
  • Muffler Inlet Outside Diameter: 2.63
  • Muffler Outlet Connection: Slip-Fit
  • Muffler Outlet Quantity: 1
  • Muffler Part Number: 942541
  • Muffler Quantity: 2
  • Muffler Series: 40 Series Delta Flow
  • Muffler Type: Chambered
  • Pipe Color: Silver
  • Pipe Material: Aluminized Steel
  • Sound Level: Aggressive / Moderate
  • Spring Bolt Kit Included: No
  • Tail Pipe Outlet Outside Diameter: 2.5
  • Tail Pipe Quantity: 2
  • Tail Pipe Tapered Outlet: No
  • Type: Crossmember-back
  • Valve Included: No
  • Valve Type: Not Applicable
  • Part Number: 17273
  • Applications:

    • 1964-1966 Ford Mustang 289 CID
    • 1964-1965 Ford Mustang 260 CID

    Emissions:

    • This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 39634967069

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    Reviewed in the United States on April 23, 2026
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    George Mann
    Port Orchard, US
    ★★★★★ 5
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    Holds their shape and stay cool.
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    Reviewed in the United States on May 24, 2026
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    River
    West Palm Beach, US
    ★★★★★ 5
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    Reviewed in the United States on January 18, 2025
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    Amazon Customer
    Dallas, US
    ★★★★★ 5
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    Reviewed in the United States on September 16, 2025

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