Installation Time
(approx) 2 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
Installation Guides
No guide available for this part yet.
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Features, Description, Reviews, Q&A, Specs & Installation
Brand | Flowmaster |
Exhaust System Type | Cat-Back System |
Exhaust Tip Finish | Black, Black Chrome |
Exhaust Tubing Diameter | 2.50 Inch |
Exhaust Material | Stainless Steel |
Exhaust Tip Outlet Style | Dual |
Exhaust Exit Location | Rear - Dual |
Exhaust Loudness | Moderate |
Stainless Durability Meets Rugged Style. Built entirely from high-grade 409 stainless steel with 3.50″ and 2.50″ mandrel-bent tubing, this Flowmaster American Thunder Dual Exhaust System with Black Tips; Rear Exit is engineered to withstand the elements and deliver long-term reliability. Its smooth bends maintain unrestricted exhaust flow and superior strength, while the quad 4.0″ black ceramic-coated tips give your Sierra a bold yet refined factory-finished appearance.
Performance-Tuned Power Gains. Under the hood, this Flowmaster American Thunder Dual Exhaust System with Black Tips; Rear Exit isn’t just about looks—it’s about power. Allowing your Sierra to breathe better, it delivers up to **15 horsepower and 13 lb-ft of torque** at the rear wheels. That’s factory-tested oomph you can feel when pulling hard or accelerating into your favorite backroad.
Active Valve Technology with Ride-Mode Integration. This Flowmaster American Thunder Dual Exhaust System with Black Tips; Rear Exit keeps the magic of your Sierra’s factory active exhaust valve. Control it via your truck’s Normal, Sport, or Off-Road driving modes: dial it in quiet for daily drives or open it up for commanding sound when you want it. No hack mods, no controller—just seamless integration with your existing dash controls.
Chambered 50 Series HD Muffler Tuning. The Flowmaster American Thunder Dual Exhaust System with Black Tips; Rear Exit is tuned to deliver that classic deep growl only Flowmaster can bring—but keeps cabin drone to a minimum. It strikes a balanced tone: aggressive and bold on the outside, composed and tolerable inside.
Installation. Putting this Flowmaster American Thunder Dual Exhaust System with Black Tips; Rear Exit on your 6.2L Sierra 1500 takes 2 hours to install.
Warranty. There is a limited lifetime warranty on this product.
Application. The Flowmaster American Thunder Dual Exhaust System with Black Tips; Rear Exit fits 2024-2026 6.2L Sierra 1500 models with Factory Dual Exhaust.
Flowmaster 818206
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation Info
Installation Time
(approx) 2 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
Installation Guides
No guide available for this part yet.
What's in the Box
Tech Guides: