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Flowmaster 17273 American Thunder Crossmember-Back Exhaust System - with 40 Series Mufflers

(1964-1966 Ford Mustang)

Part of: Flowmaster American Thunder Crossmember-Back Dual Exhaust System

Other options in this family: Flowmaster 817654 Flowmaster 817200 Flowmaster 817174 Flowmaster 17282 Flowmaster 817412

Manufacturer

Picture for manufacturer Flowmaster

Part Number

17273
4 reviews
Sale Price

$999.95

3 left at this price

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Usually delivered within 2 days

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Product Details

The Flowmaster American Thunder Crossmember-Back Exhaust System delivers aggressive sound and performance for enthusiasts seeking that iconic deep, powerful exhaust tone. This complete system features Flowmaster's legendary 40 Series Delta Flow performance mufflers, engineered to maximize exhaust flow while producing an authoritative rumble that turns heads.

Key Features:

  • 40 Series Delta Flow mufflers for aggressive sound and maximum performance
  • Mandrel-bent 16-gauge aluminized steel tubing maintains consistent diameter for optimal flow
  • H-pipe crossover design balances exhaust pulses and enhances tone
  • Extra-long polished stainless steel tips add a premium finishing touch
  • Complete crossmember-back system for comprehensive exhaust upgrade
  • Includes all necessary hangers and hardware for straightforward installation
  • Backed by over 35 years of Flowmaster engineering excellence

This bolt-on system is designed for enthusiasts who want that classic American muscle sound without sacrificing quality or durability. The mandrel-bent construction ensures smooth exhaust flow throughout the system, while the aluminized steel provides excellent corrosion resistance for long-lasting performance.

Products specifications

Fits

1964-1966 Ford Mustang

Brand

Flowmaster

Prop 65

Yes

California Proposition 65 Chemical Name

Chromium (hexavalent compounds)

California Proposition 65 Chemical Name

Nickel (Metallic)

Catalytic Converter Quantity

0

Category

Exhaust

Clamping Type

U-Bolt

Clamps Included

Yes

Drive

2WD

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 Intercooled

No

Exhaust Tip Length

29.125

Exhaust Tip Material

304 Stainless Steel

Exhaust Tip Quantity

2

Exhaust Tip Resonated

No

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

2.50

Inlet Type

Weld-On

Mounting Bracket Included

Yes

Muffler (Left) Type

Chambered

Muffler (Right) Type

Chambered

Muffler Body Material

Aluminized Steel

Muffler Body Shape

Oval

Muffler Finish

Black High-Temperature Paint Finish

Muffler Flanged Inlet

No

Muffler Flanged Outlet

No

Muffler Inlet Connection

Slip-Fit

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

Product Type

Exhaust System

Sound Level

Aggressive / Moderate

Spring Bolt Kit Included

No

Sub Category

Exhaust and Tail Pipes

Tail Pipe Quantity

2

Tail Pipe Quantity

Dual

Tail Pipe Tapered Outlet

No

Type

Crossmember-Back

Valve Included

No

Valve Type

Not Applicable

Warning

California Proposition 65

Fast service and shipping, Plus the lowest price for the high performance k&n air filter<br>I wanted.

very fast processing received product within a few days. fair prices. will do business with again.

Great

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