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Flowmaster 717988 Flow FX Cat-Back Exhaust System

(2011-2018 Chevrolet Silverado 1500; 2011-2013 GMC Sierra 1500 SLE; 2011-2018 GMC Sierra 1500 Denali/SLT)

Part of: Flowmaster Flow FX Cat-Back Exhaust System

Other options in this family: Flowmaster 717930 Flowmaster 718190 Flowmaster 718174 Flowmaster 718195 Flowmaster 717869

Manufacturer

Picture for manufacturer Flowmaster

Part Number

717988
6 reviews
Sale Price

$999.95

In Stock (7)

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Usually delivered within 2 days

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Product Details

The Flowmaster 717988 Flow FX Cat-Back Exhaust System is engineered to deliver increased performance and a commanding exhaust note for your truck. This complete bolt-on system features Flowmaster's straight-through FlowFX muffler technology that improves exhaust flow while producing a deep, moderate performance tone that's aggressive without being overwhelming.

Performance Features:

  • Delivers maximum increases of up to 11 horsepower and 15 lb-ft of torque over stock exhaust at the rear wheels
  • Single 3.50-inch inlet transitions to dual 2.50-inch mandrel-bent outlets for optimized exhaust flow
  • FlowFX straight-through muffler design reduces backpressure and improves throttle response
  • Constructed from 16-gauge 409 stainless steel tubing for maximum durability and corrosion resistance

Styling and Installation:

  • Dual 4.50-inch black ceramic coated exhaust tips provide a custom, aggressive appearance
  • Factory-styled hangers mount in stock locations for direct bolt-on installation
  • Includes all necessary hardware for complete installation
  • Mandrel-bent tubing maintains consistent diameter throughout for unrestricted flow

This cat-back system is designed as a direct replacement for your factory exhaust, offering improved performance, enhanced sound, and upgraded styling in one complete package. The moderate sound level makes it ideal for daily driving while still delivering that performance exhaust tone under acceleration.

Products specifications

Fits

2011-2018 Chevrolet Silverado 1500; 2011-2013 GMC Sierra 1500 SLE; 2011-2018 GMC Sierra 1500 Denali/SLT

Brand

Flowmaster

Prop 65

Yes

California Proposition 65 Chemical Name

Chromium (hexavalent compounds)

California Proposition 65 Chemical Name

Nickel (Metallic)

Catalytic Converter Quantity

0

Category

Exhaust

Clamping Type

Flat Band

Clamps Included

Yes

Emission Code

5

Exhaust Series

FlowFX

Exhaust Tip Color

Black

Exhaust Tip Connection

Clamp-On

Exhaust Tip Cut

Angled

Exhaust Tip Edge

Rolled Edge

Exhaust Tip Finish

Black Ceramic Coating

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 Side

Finish

Natural

Gasket Or Seal Included

No

Grade Type

Performance

Hangers Included

Yes

Inlet Type

Clamp-On

Mount Type

Uses Factory Hangers

Mounting Bracket Included

Yes

Muffler Body Material

409 Stainless Steel

Muffler Body Shape

Oval

Muffler Color

Silver

Muffler Finish

Natural

Muffler Flanged Inlet

No

Muffler Flanged Outlet

No

Muffler Inlet Connection

Slip-Fit

Muffler Inlet Location

Center

Muffler Outlet Location

Dual

Muffler Outlet Quantity

2

muffler part number

Kit Only

Muffler Quantity

1

Muffler Series

FlowFX

Muffler Type

Absorption

Pipe Color

Silver

Pipe Material

409 Stainless Steel

Product Type

Exhaust System

Sound Level

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 Logo

Embossed

Tip Style

Single wall

Type

Cat-Back

Valve Included

No

Valve Type

Not Applicable

Warning

California Proposition 65

Great experience

Good product, good price and on time delivery.

None

Quick and easy

Ordered a new battery, and got it within 2 days. I was amazed. The battery solved my starting problems and vastly improved my riding experience.

Best price available including the shipping, looking forward to getting the product

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