Flowmaster

Flowmaster 718111 Flow FX Cat-Back Exhaust System

$949.95 USD

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Low stock: 4 left

Description & Features

Flowmaster 718111 Flow FX Cat-Back Exhaust System

This Flowmaster® Flow FX® cat-back exhaust system for the 2020-2025 GM 2500HD/3500HD trucks with the 6.6-liter gas engine is manufactured using durable 409 stainless steel throughout and features 3.50 to dual 3.00-inch mandrel bent pipes for better exhaust gas flow, and a Flow FX "straight-through" muffler is used for a moderate sound level and maximum performance. Maximum increases on the dyno revealed +9 hp and +10 lb-ft at the rear wheels. This system exits out both sides, behind the rear wheels with 4.50-inch black ceramic tips for added style and a custom look. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.

Max increases of up to 9 hp and 10 lb-ft over the stock exhaust at the rear wheels
50 to dual 3.00-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
50-Inch black ceramic coated tips add a custom look to the truck
Includes complete hardware and factory styled hangers in the stock locations for an easy installation
Flow FX “straight through” performance muffler delivers a deep, aggressive to moderate performance tone and improves exhaust flow

Specifications

Brand	Flowmaster
California Proposition 65	Yes
California Proposition 65 Chemical Name	Nickel (Metallic)
CARB (California) Compliant	Yes
Catalytic Converter Included	No
Catalytic Converter Quantity	0
Category	Exhaust
Clamping Type	Flat Band
Clamps Included	Yes
Emission Code	5
Exhaust Series	Flow FX
Exhaust Tip Color	Black
Exhaust Tip Connection	Clamp-On
Exhaust Tip Cut	Angled
Exhaust Tip Diameter	4.50
Exhaust Tip Edge	Rolled Edge
Exhaust Tip Finish	Black Ceramic Coating
Exhaust Tip Intercooled	No
Exhaust Tip Length	11.00
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	Flanged
Main Piping Diameter	3.00
Mount Type	Uses Factory Hangers
Mounting Bracket Included	No
Muffler Body Height	5.00
Muffler Body Length	18.00
Muffler Body Material	409 Stainless Steel
Muffler Body Shape	Oval
Muffler Body Width	10.00
Muffler Color	Silver
Muffler Finish	Natural
Muffler Flanged Inlet	No
Muffler Flanged Outlet	No
Muffler Included	Yes
Muffler Inlet Connection	Slip-Fit
Muffler Inlet Inside Diameter	3.50
Muffler Inlet Location	Center
Muffler Inlet Outside Diameter	3.63
Muffler Outlet Connection	Slip-Fit
Muffler Outlet Diameter	3.00
Muffler Outlet Location	Dual
Muffler Outlet Quantity	2
Muffler Overall Length	24.00
Muffler Part Number	Kit Only
Muffler Quantity	1
Muffler Series	Flow FX
Muffler Type	Absorption
part type	Exhaust System
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 Outlet Outside Diameter	3.00
Tail Pipe Quantity	Dual
Tail Pipe Tapered Outlet	No
Tip Logo	Embossed
Type	Cat-Back
Valve Included	No
Valve Type	Not Applicable
Warning	California Proposition 65

Packaging Information

Weight: 69.15 lbs
Dimensions: 58.3 x 16.5 x 11.8 IN

Safety

⚠ WARNING: This product can expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information visit www.P65Warnings.ca.gov

Warranty

View Warranty (PDF)

Installation Instructions

View Installation Instructions (PDF)

⚠ Fitment Notes

Black Ceramic Tip Finish, FITS CREW CAB, 6.5-FOOT BED TRUCKS ONLY
2020-2025 GM 2500HD/3500HD Trucks with 6.6-liter gas engines. Fits 2 & 4-wheel drive, Crew Cab with 6.5-foot bed only. Does not fit 5th wheel towing packages. Does not fit ZR2 and AT4X packages.