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Flowmaster Flow FX Cat-Back Exhaust System Fits 2011-2019 GM Silverado/Sierra 2500/3500 HD 6.0L V8 Crew Cab/6.5' Bed, Flow FX 3.5" Cat-Back, Single Side Exit, Stainless Steel Exhaust System - 717931

Was: $956.95
Now: $763.95
SKU:
717931
Weight:
56.00 LBS
Shipping:
Calculated at Checkout
Flowmaster Flow FX Cat-Back Exhaust System Fits 2011-2019 GM Silverado/Sierra 2500/3500 HD 6.0L V8 Crew Cab/6.5' Bed, Flow FX 3.5" Cat-Back, Single Side Exit, Stainless Steel Exhaust System - 717931

Description

The Flowmaster Flow FX Cat-Back Exhaust System is engineered for 2011–2019 GM Silverado/Sierra 2500/3500 HD trucks with 6.0L engines, designed for Crew Cab short bed models with a 6.5-foot bed. This premium system delivers a moderate, deep performance tone while maximizing power and durability.

Constructed entirely from 3.50-inch mandrel-bent 16-gauge 409 stainless steel, this system ensures improved exhaust flow and long-lasting corrosion resistance. The Flow FX “straight-through” muffler enhances performance while maintaining a balanced exhaust note. Installation is straightforward using factory hanger locations, with all necessary hardware included for an at-home installation.

The system exits out the side, behind the rear wheel, with a 5.00-inch black ceramic-coated tip that adds a clean, custom look. Dyno-tested gains include +21 hp and +23 lb-ft at the rear wheels, giving your Silverado or Sierra noticeable performance improvement without sacrificing comfort.

Backed by Flowmaster’s Lifetime Limited Warranty, this Flow FX cat-back system is an ideal upgrade for Silverado and Sierra owners seeking durability, style, and moderate performance sound.

Fitment 

  • Fits 2011–2019 GM Silverado 2500 HD

  • Fits 2011–2019 GM Silverado 3500 HD

  • Fits 2011–2019 GM Sierra 2500 HD

  • Fits 2011–2019 GM Sierra 3500 HD

  • Engine: 6.0L V8

  • Crew Cab with 6.5-foot bed

  • Cat-back exhaust system with single side exit

Features

  • Dyno-proven gains of +21 hp and +23 lb-ft at the rear wheels

  • 3.50-inch mandrel-bent 16-gauge 409 stainless steel tubing for improved exhaust flow and durability

  • Flow FX “straight-through” muffler provides a deep, moderate performance tone

  • 5.00-inch black ceramic-coated tip adds a clean, custom appearance

  • Uses factory hanger locations for easy installation

  • Complete hardware and installation instructions included

  • Backed by Flowmaster Lifetime Limited Warranty

Specifications

  • Brand: Flowmaster

  • California Proposition 65: Yes

  • CARB Compliant: Yes

  • Catalytic Converter Included: No

  • Catalytic Converter Quantity: 0

  • Category: Exhaust

  • Clamping Type: Flat Band

  • Clamps Included: Yes

  • Exhaust Series: FlowFX

  • Exhaust Tip Color: Black

  • Exhaust Tip Connection: Clamp-On

  • Exhaust Tip Cut: Angled

  • Exhaust Tip Diameter: 5.00 IN

  • Exhaust Tip Edge: Rolled Edge

  • Exhaust Tip Finish: Black Ceramic Coating

  • Exhaust Tip Length: 12.00 IN

  • Exhaust Tip Material: 304 Stainless Steel

  • Exhaust Tip Quantity: 1

  • Exhaust Tip Resonated: No

  • Exit Style: Single Out Side

  • Finish: Natural

  • Grade Type: Performance

  • Hangers Included: Yes

  • Inlet Type: Flanged

  • Main Piping Diameter: 3.50 IN

  • Mount Type: Uses Factory Hangers

  • Muffler Body Dimensions: 18.00" L x 8.00" W x 5.00" H

  • Muffler Material: 409 Stainless Steel

  • Muffler Body Shape: Oval

  • Muffler Color: Silver

  • Muffler Finish: Natural

  • Muffler Type: Absorption

  • Muffler Series: FlowFX

  • Muffler Inlet/Outlet Connection: Slip-Fit

  • Muffler Outlet Quantity: 1

  • Pipe Color: Silver

  • Pipe Material: 409 Stainless Steel

  • Sound Level: Moderate

  • Sub Category: Exhaust and Tail Pipes

  • Tail Pipe Diameter: 3.50 IN

  • Tail Pipe Quantity: 1

  • Type: Cat-Back

  • Valve Included: No

  • Valve Type: Not Applicable