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Aggressive sound and performance with durable stainless steel construction.
The Flowmaster American Thunder cat-back exhaust system is engineered for those seeking enhanced performance and a commanding sound profile. This system features a robust 3-1/2 inch stainless steel inlet tube that connects to a single 50 Series HD muffler, designed to deliver a moderately aggressive tone while maintaining a refined interior sound. The dual 2-1/2 inch mandrel-bent tailpipes replace factory resonators, providing an improved exhaust flow and a distinctive growl that sets your vehicle apart.
Constructed from high-quality stainless steel, this exhaust system includes quad 4 inch black ceramic coated tips that enhance the visual appeal of your truck. The design utilizes factory hanger locations, ensuring a straightforward installation process without the need for welding. All necessary components, including detailed instructions and hardware, are included to facilitate an at-home installation.
With its combination of performance benefits and aesthetic enhancements, the Flowmaster American Thunder cat-back system is a reliable choice for those looking to upgrade their vehicle's exhaust system. The system is designed to optimize exhaust flow, contributing to improved engine performance and efficiency.
Features
- Durable Stainless Steel Construction
- Large 4 Inch Black Ceramic Coated Tips
- Removes Factory Resonators In Tailpipes
- Large 50 Series HD Performance Muffler
- Moderately Aggressive Exterior Tone
- Uses The Factory Hanger Locations For Easy Installation
Specifications
- Manufacturer: Flowmaster
- Manufacturer Part Number: 817891
- Type: Cat-Back
- Exhaust Type: Single
- Outlet Type: Quad
- Exit Position: Driver And Passenger Rear
- Material: Stainless Steel
- Includes Muffler: Yes
- Sound Level: Aggressive/ Moderate
- Diameter (IN): 3-1/2 Inch
- Includes Exhaust Tip: Yes
- Exhaust Tip Style: 4 Inch Round Angle-Cut
- Exhaust Tip Material: Stainless Steel
- Muffler Quantity: 1
- Includes Exhaust Pipe Muffler Delete: No
- Muffler Configuration: Single Inlet/ Dual Outlet
- Muffler Brand: 50 Series HD
- Includes Hardware: Yes
- Required Welding: No
- Estimated Install Time (Hours): 2
Compatibility / Fit
- 2020-2021 Chevrolet Silverado 1500
- 2023-2025 Chevrolet Silverado 1500
- 2022-2022 Chevrolet Silverado 1500 LTD- Old Model
- 2019-2019 Chevrolet Silverado 1500- New Model
- 2022-2022 Chevrolet Silverado 1500- New Model
- 2020-2021 GMC Sierra 1500
- 2023-2026 GMC Sierra 1500
- 2022-2022 GMC Sierra 1500 Limited- Old Model
- 2019-2019 GMC Sierra 1500- New Model
- 2022-2022 GMC Sierra 1500- New Model
Technical Documents
Product Videos
Shipping & Returns
- This product ships within the continental USA only.
- This product typically ships within 1 to 3 business days.
- Returns are accepted within 30 days for items in like-new condition. For complete details, please see our return policy.
