Installation Time
(approx) 3 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
Installation Guides
No guide available for this part yet.
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Flowmaster FlowFX Dual Exhaust System; Rear Exit (24-26 6.2L Sierra 1500 w/ Factory Dual Exhaust)Find parts that fit my vehicle
Item S590860
Our Price
$1,449.95 kit
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$72.50 Available in AT Cash Rewards.
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- 3.50-Inch Inlet Pipe Leading Into Specialty Tuned Flow FX Style Muffler for Enhanced Sound and Performance
- Dual 2.5-Inch Mandrel-Bent Tailpipes Exiting Through Bumper Cut-Out Locations Retaining Factory Exhaust Bezel
- Active Valve Control With Integrated Turndown Allows Dashboard Control of Factory Valve Through Different Drive Modes
- Valve Closed in Normal Drive Mode; Open in Sport or Off-Road Mode for Maximum Sound
- Max Dyno Gains of up to 15 Hp and 13 Lb-Ft at Rear Wheels
- Constructed from 16-Gauge 409 Stainless Steel Tubing for Durability
- Complete Hardware Included With Factory-Style Hangers for Easy Installation
- Inlet Diameter 3.50 Inches; Main Piping Diameter 2.50 Inches; Dual Outlet Rear Exit Style
- Tuned Flow FX Muffler Body Dimensions: 18-Inch Length, 8-Inch Width, 5-Inch Height, Oval Shape
- Slip-Fit Muffler Inlet and Outlet Connections; Absorption Muffler Type
- Sound Level Ranges from Aggressive to Moderate Performance Tone
- Retains OEM-Style Valves With Active Valve Included; Valve Actuator Requires Reuse of OEM Actuator
- Clamping Type Is Flat Band With Clamps and Mounting Bracket Included
- California Proposition 65 Compliant; CARB (California) Compliant
- Lifetime Limited Warranty Included
- Fits 24-26 6.2L Sierra 1500 W/ Factory Dual Exhaust
| Brand | Flowmaster |
| Exhaust System Type | Cat-Back System |
| Exhaust Tip Finish | No Tips |
| Exhaust Tubing Diameter | 2.50 Inch |
| Exhaust Material | Stainless Steel |
| Exhaust Tip Outlet Style | Dual |
| Exhaust Exit Location | Rear - Dual |
| Exhaust Loudness | Moderate |
Description
Performance Exhaust System. The Flowmaster FlowFX Dual Exhaust System with Rear Exit is designed to enhance exhaust flow and sound for 2024–2026 GM 1500 trucks equipped with the 6.2-liter engine. It delivers increased horsepower and torque output while providing a deep, aggressive tone that can be adjusted via factory drive modes, giving enthusiasts a customizable performance upgrade.
Construction and Appearance. Built from durable 16-gauge 409 stainless steel, this cat-back exhaust system features mandrel-bent piping for smooth flow. The oval muffler, finished in its natural state, incorporates a specialized Flow FX design that balances aggressive and moderate exhaust tones. Dual 2.5-inch tailpipes exit through bumper cut-outs while retaining the factory exhaust bezel to maintain a clean, factory-integrated appearance.
Installation. This exhaust system utilizes all factory hanger locations and connections for a straightforward installation. Complete hardware is included, and no drilling or modifications are required, making it suitable for home installation without specialized tools.
Warranty. Backed by a lifetime limited warranty, this exhaust system ensures long-term reliability and customer peace of mind.
Application. Specifically made for 2024 through 2026 6.2L Sierra 1500 models equipped with factory dual exhaust systems, ensuring precise fitment and compatibility with OEM valve control.
Flowmaster 718207
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Extension Pipe
- (1) Muffler Inlet Pipe
- (1) Muffler
- (1) Left Front Tail Pipe
- (1) Right Front Tail Pipe
- (1) Left Rear Tail Pipe
- (1) Right Rear Tail Pipe
- (4) 2.5” Band Clamp
- (2) 3.5” Band Clamp
- (3) ½” Push Nut
- (3) ½” O.D X ¾” Spacer
- (3) ¼-20 X 1.5 Button Head Bolt
- (3) ¼” Lock Washer
- (3) ¼-20 Nut
- (4) Cable Tie
- (1) Valve Harness Extension
Tech Guides:
- Best Truck Exhaust Systems: The Complete Buyer's Guide
- Glossary What Are The Best Exhaust Systems? How Exhaust Systems Work
- Top 10 Favorite Exhaust Brands
- The Top 7 Aftermarket Exhaust Choices for Your Daily Driver
- The Best Truck Exhaust Systems for Serious Towing
- Magnaflow vs. Flowmaster: Which Exhaust System Sounds the Best
- GMC Sierra 1500 Cat-Back Exhausts
4.6
Customer Reviews (225)
Questions & Answers
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Will It Fit My Sierra 1500
- 6.2L V8 - 24, 25, 26
