
Description
This Flowmaster American Thunder cat-back exhaust system is custom designed for 2014-2019* (*Classic body) GM Silverado/Sierra 1500 trucks and is perfect for the person looking for a moderate sound level inside the cab area, with an aggressive exterior sound with all of the performance benefits that you expect from Flowmaster. This bolt-on emissions-legal system is for the Crew Cab and Double Cab models with 4.3L or 5.3L engines and comes with your choice of tailpipe exits, either dual out the rear under the bumper, or dual out the sides behind the rear tires.
System features include stainless steel mandrel bent tubing flowing into a Super 40 series muffler and exiting with dual 2.50-inch stainless steel mandrel bent tailpipes. The system uses the factory hanger locations and is finished off with a pair of large 3.50-inch polished stainless steel tips and is covered by our Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.
- Aggressive Exterior with Moderate Interior Tone
- Super 40 Series Performance Muffler
- Delta Flow Technology
- Custom Fit for Easy Installation
- All Stainless Steel Construction
- Lifetime Limited Warranty
➡️ Warranty
Flowmaster Warranty
Coverage: Manufacturer's Limited Lifetime Warranty.
Coverage applies to the original purchaser while the product remains installed on the original vehicle and protects against defects in materials and workmanship. Normal wear, cosmetic changes, racing use, improper installation, alteration, misuse, collision, and road-impact damage are excluded.
Proof of purchase is required; warranty registration is not mandatory. Flowmaster may replace the product or refund the original purchase price after inspection. Installation, removal, labour, towing, transportation, and return-shipping costs are not covered.
➡️ Shipping & Returns
Shipping & Refund Policy
Shipping:
We ship across Canada. Orders are processed within 1–2 business days. Delivery within Canada typically takes 3–10 business days depending on location and carrier. Tracking information will be provided once your order ships.
Refunds & Returns:
Returns are accepted within 30 days of delivery. Items must be unused and in original packaging. Please review our full return policy for more details.
Damaged or Incorrect Items:
If you receive a damaged or incorrect item, please contact us within 5 days of delivery. Call or text 416-624-1357 or email sales@Niagarajeeps.ca so we can resolve the issue quickly.
➡️ Fitment Table
Vehicle Fitment
| Year | Make | Model |
|---|---|---|
| 2014-2018 | Chevrolet | Silverado 1500 |
| 2019 | Chevrolet | Silverado 1500 LD |
| 2014-2018 | GMC | Sierra 1500 |
| 2019 | GMC | Sierra 1500 Limited |
Confirm engine, cab, wheelbase, body style, emissions requirements, and other product-specific requirements before ordering.
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