FLOWMASTER | Flow Fx Cat-Back Exhaust System Fits 1999-2007 (Classic Body) GM 1500 4.3L, 4.8L, 5.3L With 143.5 Inch Wheelbase, Single Exit Aggressive To Moderate Sound | 717873

Description
This Flowmaster Flow FX cat-back exhaust system is designed for 1999-2007* (*Classic Body) GM Silverado/Sierra 1500 trucks with 4.3L, 4.8L & 5.3L engines and features 409 stainless steel construction for added durability and 16-gauge mandrel-bent tubing for free unrestricted flow. The compact, oval straight-through Flow FX performance muffler attaches behind the catalytic converter and delivers a moderate, deep and powerful sound with minimal interior resonance.
The mandrel-bent stainless tailpipe tucks up high in the undercarriage protecting it from being crushed when traversing rocky terrain. This system uses the factory hanger locations and is finished off with a 4.50-inch black ceramic-coated 304 stainless steel tip embossed with the Flowmaster name. The kit includes detailed instructions and all hardware necessary for a quick and easy installation you can do at home. Covered by our Lifetime Limited Warranty.
- Increases of 6.7 HP and 6.5 FT/LBS over the stock exhaust
- System produces a nice rumble with minimal internal resonance
- Large 4.50-inch black ceramic coated stainless steel tip offers an aggressive look
- Includes complete hardware and factory styled hangers in stock locations for an easy installation
- FlowFX straight-through performance muffler delivers a deep tone and improved exhaust flow
- Mandrel-bent 16-gauge 409 stainless steel tubing maximizes exhaust flow with excellent corrosion resistance
- Lifetime Limited Warranty
Fitment Table
Vehicle Fitment
| Year | Make | Model |
|---|---|---|
| 1999-2006 | Chevrolet | Silverado 1500 |
| 2007 | Chevrolet | Silverado 1500 Classic |
| 1999-2006 | GMC | Sierra 1500 |
| 2007 | GMC | Sierra 1500 Classic |
Confirm engine, cab, wheelbase, body style, emissions requirements, and other product-specific requirements before ordering.
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.