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Flowmaster 817940 American Thunder Crossmember-Back Exhaust System - with Super 44 Mufflers

(1967-1972 Chevrolet K10 Pickup; 1967-1972 Chevrolet K20 Pickup; 1968-1971 Chevrolet K30 Pickup; 1967-1972 GMC K15/K1500 Pickup + 2 more models)

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

Other options in this family: Flowmaster 817654 Flowmaster 17201 Flowmaster 817200 Flowmaster 817174 Flowmaster 17282

Manufacturer

Picture for manufacturer Flowmaster

Part Number

817940
5 reviews
Sale Price

$1,049.95

1 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 is engineered to deliver enhanced performance and an aggressive exhaust tone for muscle cars and trucks. This complete bolt-on system features mandrel-bent 2.50-inch diameter tubing constructed from durable 16-gauge 409 stainless steel for maximum flow and long-lasting corrosion resistance.

Key Features:

  • Super 44 series mufflers provide aggressive to moderate sound levels with improved horsepower and torque
  • H-pipe crossover design improves exhaust scavenging and reduces unwanted interior drone
  • Mandrel-bent pipes maintain consistent diameter throughout bends for optimal exhaust flow
  • 16-gauge 409 stainless steel construction offers superior durability and strength
  • Three different tailpipe exit configurations available to customize your vehicle's appearance
  • Crossmember-back design is compatible with stock exhaust manifolds or aftermarket headers
  • Complete kit includes all necessary hangers and hardware for straightforward installation
  • Backed by Flowmaster's Lifetime Limited Warranty

This American Thunder system combines Flowmaster's legendary aggressive sound with practical design features that reduce drone for a more comfortable driving experience. The bolt-on installation makes it an ideal upgrade for enthusiasts seeking better performance and enhanced exhaust tone without complex modifications.

Products specifications

Fits

1967-1972 Chevrolet K10 Pickup; 1967-1972 Chevrolet K20 Pickup; 1968-1971 Chevrolet K30 Pickup; 1967-1972 GMC K15/K1500 Pickup; 1967-1972 GMC K25/K2500 Pickup; 1968-1971 GMC K35/K3500 Pickup

Tubing Diameter

2.500 in

Prop 65

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

California Proposition 65 Chemical Name

Nickel (Metallic)

California Proposition 65 Chemical Name

Chromium (hexavalent compounds)

Material

409 Stainless Steel

Exit Position

Dual Side Rear

Exhaust Type

Crossmember Back

Brand

Flowmaster

Catalytic Converter Quantity

0

Category

Exhaust

Clamping Type

Flat Band

Clamps Included

Yes

Emission Code

5

Exhaust Series

American Thunder

Exhaust Tip Quantity

0

Exhaust Tip Quantity

Sold Separately

Exhaust Tip Shape

Round

Exit Style

Dual Out Side

Exit Style

Dual Out Rear

Finish

Natural

Gasket Or Seal Included

No

Grade Type

Performance

Hangers Included

Yes

Heat Shield Included

No

Inlet Type

Weld-On

Mount Type

Uses New Hangers (Included)

Mounting Bracket Included

Yes

Muffler (Left) Body Width

9.50

Muffler (Left) Type

Chambered

Muffler (Right) Type

Chambered

Muffler Body Length

13.25

Muffler Body Material

409 Stainless Steel

Muffler Body Shape

Oval

Muffler Color

Black

Muffler Finish

Black High-Temperature Paint Finish

Muffler Flanged Inlet

No

Muffler Flanged Outlet

No

Muffler Inlet Connection

Slip-Fit

Muffler Inlet Location

Offset

Muffler Outlet Connection

Slip-Fit

Muffler Outlet Quantity

1

muffler part number

Kit Only

Muffler Quantity

2

Muffler Series

Super 44

Muffler Type

Reflection

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

Tip Style

Not Included

Type

Crossmember-Back

Valve Included

No

Valve Type

Not Applicable

Warning

California Proposition 65

very fast shipping ,very satisfied

Easy

Fast and easy

Fast shipping. Great price. Awesome experience.

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