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Flowmaster 17742 American Thunder Crossmember-Back Dual Exhaust System

(Chevrolet C10 Pickup 1973-74, C10 1975-86, C20 Pickup 1973-74, C20 1975-86, R20 1987-88; GMC C1500 1979-86, C15/C1500 Pickup 1973-74 + 4 more models)

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

17742
13 reviews
Sale Price

$1,065.95

In Stock (10)

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Usually delivered within 2 days

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FREE SHIPPING

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Flowmaster American Thunder Crossmember-Back Exhaust System delivers exceptional performance and an aggressive exhaust note for enthusiasts seeking maximum power and sound. This true dual exhaust system features an H-pipe crossover design that optimizes exhaust flow and scavenging for increased horsepower and torque throughout the RPM range.

Key Features:

  • Super 44 Series mufflers produce a deep, powerful exhaust tone with aggressive to moderate exterior sound
  • Mandrel-bent 16-gauge aluminized steel tubing maintains consistent diameter for unrestricted exhaust flow
  • H-pipe crossover balances exhaust pulses between banks for maximum power gains
  • True dual exhaust configuration from crossmember to tailpipes
  • Complete bolt-on system includes all necessary hangers and hardware for installation
  • Aluminized steel construction provides excellent corrosion resistance and durability

Installation Notes: This crossmember-back system does not include header reducers or downpipes for factory manifolds. Factory or aftermarket headers/manifolds with appropriate connections are required.

Engineered and manufactured in the USA, this American Thunder system combines Flowmaster's legendary performance engineering with straightforward installation for a premium exhaust upgrade that delivers both power and sound.

Products specifications

Fits

Chevrolet C10 Pickup 1973-74, C10 1975-86, C20 Pickup 1973-74, C20 1975-86, R20 1987-88; GMC C1500 1979-86, C15/C1500 Pickup 1973-74, C2500 1979-86, C25/C2500 Pickup 1973-74, C15 1975-78, C25 1975-78

Brand

Flowmaster

Prop 65

No

Catalytic Converter Quantity

0

Category

Exhaust

Choose Your Part

Exhaust System

Clamping Type

U-Bolt

Clamps Included

No

Drive

2WD

Emission Code

5

Exhaust Series

American Thunder

Exhaust Tip Quantity

0

Exhaust Tip Quantity

Sold Separately

Exhaust Tip Resonated

No

Exhaust Tip Shape

Round

Exit Style

Dual Out Side

Exit Style

Dual Out Rear

Finish

Aluminized

Gasket Or Seal Included

No

Grade Type

Performance

Hangers Included

Yes

Inlet Diameter

2.50

Inlet Type

Clamp-On

Mount Type

Flanged

Mounting Bracket Included

No

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 Quantity

2

Muffler Series

Super 44

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

Truck Bed Length

Short Bed

Truck Bed Length

Long Bed

Type

Crossmember-Back

Valve Included

No

Valve Type

Not Applicable

East to find and purchase.

Quick and direct to my part

very good product pricing

Everything arrived well packaged and in good order... It was shipped promptly, but hey, no accounting for the snow storm in the NW... I think UPS calls it an "act of God"... Thanks

All parts I ordered were in stock and arrived 4 days after I ordered them! One item was even 46% less than any other place online. I'm super pleased.

Pretty easy forward

Good Seller, very quick shipping and excellent transaction.

ok...fast shipping.

If it fits I will be very happy.

very customer friendly

Great customer service. Good price. Quick shipment. Would definately reccomend this company.

Awesome customer service and very good pricing!

Item as described. Fast Shipping! Will buy from again!!

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