Flowmaster
Flowmaster 99-02 Chevrolet/GMC Truck 144in. Wheelbase American Thunder Cat-Back Exhaust System
Why this price?
$584.95 is MSRP, the lowest price Flowmaster lets us list it at. Additionally, Pro members get $64.34 back on this part.
$584.95 − $64.34 = $520.61
Special Order
This part is still available to order. Once you place your order, we’ll submit it directly to Flowmaster, and they’ll ship it straight to you.
Delivery times can vary depending on the brand, so we can’t guarantee an exact arrival date. What we can guarantee is that we’ll stay on top of your order, monitor its progress, and keep you updated until it reaches your door.
Special-order items are typically not kept in stock by most retailers. By ordering through us, your order is placed directly with Flowmaster, assuring you get the part as quickly as possible.
Want to get an estimated delivery timeframe before ordering? Contact us through our contact page, and we’ll be happy to find out for you.
Not sure it fits? Read our tips.
Fitment tips
Fitment can come down to more than year, make and model. Sometimes the sub-model decides, so start with the fitment table below.
- Drive type. If your car is all-wheel drive, make sure the part is for all-wheel drive, not rear-wheel drive.
- Engine size. For engine parts, make sure the engine size on the product matches your engine.
- Transmission. Manual and automatic cars often take different parts.
- Body style. Sedan or hatch, two-door or four-door, cab and bed length on trucks.
Manufacturer data can sometimes have imperfections. Still not sure? We are happy to help.
Send us a message and we will confirm the fit.
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For the person who wants a subtle custom appearance with all the benefits that a Flowmaster Cat-back exhaust system provides. This American Thunder system delivers a moderate interior tone with a deep powerful exterior tone and is suited to the enthusiast who wants their performance to be heard. The system attaches to the back of the catalytic converter with a dual inlet 50 Series Big Block muffler for a deep powerful sound without being obnoxious. Includes a large custom formed aluminum heat shield with stainless clamps and easily attaches directly to the muffler body. The custom bent 3.00-inch aluminized steel tailpipe uses the factory hanger locations for an easy installation and exits out behind the right side rear wheel which is ideal for towing. The tailpipe is finished off with a large 3.50-inch polished 304 stainless steel tip embossed with the Flowmaster logo. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts, hardware and easy to follow instructions for a trouble free installation. Notes: Fits 2/4 wheel drive trucks with the extended cab/short bed configuration - 143.5-inch wheelbase.
- Includes an Aluminum Heat Shield for Rapid Heat Dissipation
- Includes a Large 3.50-inch Polished 304 Stainless Steel Tip
- Includes Hangers and Hardware for an Easy Installation
- Mandrel-bent 16-gauge Aluminized Steel Tubing
- Dyno-tuned for Maximum Performance
- Stainless Steel Heat Shield Clamps
- Uses the Factory Hanger Locations
- Aggressive Exterior Exhaust Tone
- Easy Installation
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2002 | Chevrolet | Silverado 2500 | Base |
| 1999-2002 | Chevrolet | Silverado 2500 | LS |
| 1999-2002 | Chevrolet | Silverado 2500 | LT |
| 2002 | GMC | Sierra 2500 | Base |
| 1999-2002 | GMC | Sierra 2500 | SL |
| 1999-2002 | GMC | Sierra 2500 | SLE |
| 1999-2002 | GMC | Sierra 2500 | SLT |
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