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Flowmaster 817933 American Thunder Cat-Back Exhaust System

(2020-2026 Chevrolet Silverado 2500 HD; 2020-2026 Chevrolet Silverado 3500 HD; 2020-2026 GMC Sierra 2500 HD; 2020-2026 GMC Sierra 3500 HD)

Part of: Flowmaster American Thunder Cat-Back Exhaust System

Other options in this family: Flowmaster 17395 Flowmaster 817568 Flowmaster 17213 Flowmaster 818196 Flowmaster 818176

Manufacturer

Picture for manufacturer Flowmaster

Part Number

817933
6 reviews
Sale Price

$1,117.95

3 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

Fitment guaranteed

Product Details

The Flowmaster 817933 American Thunder Cat-Back Exhaust System delivers aggressive sound and improved performance for your vehicle. This complete cat-back system features Flowmaster's signature deep, powerful exhaust note that turns heads while providing measurable gains in horsepower and torque.

Key Features:

  • 50 Series HD Muffler: Utilizes Delta Flow technology for superior flow characteristics and the iconic Flowmaster sound
  • Large 3.0-inch Dual Tailpipes: Oversized tubing maximizes exhaust flow and reduces backpressure for better performance
  • 409 Stainless Steel Construction: Corrosion-resistant material ensures long-lasting durability in all weather conditions
  • Mandrel-Bent 16-Gauge Tubing: Precision bends maintain consistent tube diameter throughout for optimal exhaust velocity
  • Multiple Tailpipe Exit Options: Kit includes components for flexible installation configurations
  • Factory Hanger Compatibility: Bolts directly to existing mounting points for straightforward installation

Backed by Flowmaster's Lifetime Limited Warranty, this American Thunder system combines race-proven performance technology with aggressive styling. The 50 Series muffler provides an exterior sound level that's noticeably louder than stock while maintaining reasonable interior cabin noise levels. Perfect for enthusiasts seeking maximum performance and an unmistakable muscle car sound.

Products specifications

Fits

2020-2026 Chevrolet Silverado 2500 HD; 2020-2026 Chevrolet Silverado 3500 HD; 2020-2026 GMC Sierra 2500 HD; 2020-2026 GMC Sierra 3500 HD

Brand

Flowmaster

Prop 65

Yes

California Proposition 65 Chemical Name

Chromium (hexavalent compounds)

California Proposition 65 Chemical Name

Nickel (Metallic)

Catalytic Converter Format

No

Catalytic Converter Quantity

0

Category

Exhaust

Clamping Type

Flat Band

Clamps Included

Yes

Emission Code

5

Exhaust Series

American Thunder

Exhaust Tip Color

Silver

Exhaust Tip Connection

Clamp-On

Exhaust Tip Cut

Angled

Exhaust Tip 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

Double Wall

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

Flanged

Mount Type

Uses Factory Hangers

Mounting Bracket Included

Yes

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

Center

Muffler Outlet Connection

Slip-Fit

Muffler Outlet Location

Dual

Muffler Outlet Quantity

2

muffler part number

Kit Only

Muffler Quantity

1

Muffler Series

50 Series HD

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

Dual

Tail Pipe Quantity

2

Tail Pipe Tapered Outlet

No

Tip Logo

Embossed

Tip Style

Double wall

Type

Cat-Back

Valve Included

No

Valve Type

Not Applicable

Warning

California Proposition 65

So far so good ,order made

Fast service.

Nice website and competitive prices

Very smooth transaction, good email communication, order arrived as expected

As described and rapid delivery.

good price

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