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Flowmaster 817174 American Thunder Crossmember-Back Dual Exhaust System

(1955-1957 Chevrolet Bel Air; 1955-1957 Chevrolet One-Fifty Series; 1955-1957 Chevrolet Two-Ten Series)

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

Other options in this family: Flowmaster 817654 Flowmaster 17201 Flowmaster 817200 Flowmaster 17282 Flowmaster 817412

Manufacturer

Picture for manufacturer Flowmaster

Part Number

817174
9 reviews
Sale Price

$1,249.95

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Flowmaster 817174 American Thunder Crossmember-Back Exhaust System delivers a moderate to aggressive exhaust tone with true dual exhaust performance. This complete cat-back system is engineered for enthusiasts seeking maximum power gains and that signature deep Flowmaster sound.

Key Features:

  • True dual exhaust design with crossmember-back configuration
  • Super 44 Series mufflers produce a deep, powerful exhaust note
  • Mandrel-bent 16-gauge stainless steel tubing for maximum exhaust flow and corrosion resistance
  • H-pipe crossover balances exhaust pulses for increased power and deeper tone
  • Includes all necessary hangers and hardware for bolt-on installation
  • Backed by Flowmaster's Lifetime Limited Warranty

This system is designed for straightforward installation and does not include header reducers or downpipes for factory manifolds. The stainless steel construction ensures long-lasting durability, while the precision mandrel-bent tubing maintains consistent pipe diameter for unrestricted exhaust flow. The Super 44 mufflers are specifically chosen to deliver an aggressive exterior sound while minimizing interior drone.

Products specifications

Fits

1955-1957 Chevrolet Bel Air; 1955-1957 Chevrolet One-Fifty Series; 1955-1957 Chevrolet Two-Ten Series

Inlet Inside Diameter

2.500 in.

Outlet Outside Diameter

2.500 in.

Tip Diameter

3.000 in.

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

California Proposition 65 Chemical Name 2

Chromium (hexavalent compounds)

California Proposition 65 Chemical Name 1

Nickel (metallic)

California Proposition 65 Chemical Name

Chromium (hexavalent compounds)

California Proposition 65 Chemical Name

Nickel (Metallic)

System Type

Header Back

Heat Shield Attached

No

Material

Stainless Steel

Tubing Diameter

2.500 in.

Outlet Diameter

2.500 in.

Muffler Count

2

Exit Position

Dual Rear

Tip Quantity

2

Tail Pipe Diameter

2.500 in.

Exhaust Type

Dual

Single or Dual

Dual

Title

Flowmaster 817174 Header-back System 409S - Dual Rear Exit - American Thunder -Moderate/Aggressive

Brand

Flowmaster

Catalytic Converter Quantity

0

Category

Exhaust

Clamping Type

Flat Band

Clamps Included

Yes

Drive

2WD

Emission Code

5

Exhaust Series

American Thunder

Exhaust Tip Color

Silver

Exhaust Tip Connection

Clamp-On

Exhaust Tip Cut

Angled

Exhaust Tip Edge

Rolled Edge Angle Cut

Exhaust Tip Finish

Polished

Exhaust Tip Intercooled

No

Exhaust Tip Material

304 Stainless Steel

Exhaust Tip Quantity

2

Exhaust Tip Resonated

No

Exhaust Tip Shape

Round

Exhaust Tip Wall

Single Wall

Exit Style

Dual Out Rear

Finish

Natural

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) Body Width

10.00

Muffler (Left) Type

Chambered

Muffler (Right) Type

Chambered

Muffler Body Material

409 Stainless 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

Kit Only

Muffler Quantity

2

Muffler Series

Super 40 Series

Muffler Type

Chambered

Pipe Color

Silver

Pipe Material

409 Stainless 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

Very fast shipping and good cutomer service

Easy payment process

site has a lot of parts and accessories. Good prices. Just needs a better way to narrow searches down more.

Awesome price! Shipping could be faster, but it was fast enough. Will deff buy again.

Best prison the Internet and quick order fulfillment. Glad to have found Autoplicity!

Ordered 4 race ramps flatstoppers for winter storage of my Dodge Viper. Product prevents flat spots on auto tires that are stored more than 30 days. Order process was extremely easy, product was promptly shipped. I'll definately do business with Autoplicity in the future.

Very please with first buying experience with Autoplicity! Not only did they have the best price, I promptly received the following e-mail message the next day after I ordered.<br><br>Hello brian willard!, <br>Good news! You order has been shipped. <br>Order Number: 1412<br>Order Details: http://autoplicity.com/orderdetails.aspx?orderid=1412<br>Date Ordered: Wednesday, December 21, 2011<br>Tracking Number: 1Z4XR0770346534081

Shipped out fast. Prices are very competitive. Couldn't ask for more.

Best prices I could find on bug shields and rain guards!

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